The Sounds of Teeth with resident naturalist John Locke at the Caribou Public Library, 4:30 p.m. Insights about animal teeth: their shapes, what they are used for and the sounds they make. Free for all ages. FMI: 493-4214.

Medicare Part D enrollment clinic, sponsored by Aroostook Agency on Aging. Contact Tammy Delong, AAA Medicare specialist, at 764-3396 or 1 (800) 439-1789 for an appointment and further information.

Free workshop, Financial Aid, at the Houlton Higher Education Center, 18 Military St., 9 a.m. and 12 noon. FMI or to register, call 1 (800) 281-3703.

Holiday craft workshops at Francis Malcolm Science Center, 5:30 p.m. Make a wreath, centerpiece or swag. Reservations required. Cost: $15, large centerpiece or wreath; $8, small centerpiece or swag. FMI: 488-5451, visit the center on Facebook or email tricia@francismalcolmsciencecenter.com.

Reboot - entrepreneurial training for veterans, 8 a.m.-5 p.m. at the Presque Isle CareerCenter, 66 Spruce St. To register: sbavets.force.com.

Holiday craft workshops at Francis Malcolm Science Center, 5:30 p.m. Make a wreath, centerpiece or swag. Reservations required. Cost: $15, large centerpiece or wreath; $8, small centerpiece or swag. FMI: 488-5451, visit the center on Facebook or email tricia@francismalcolmsciencecenter.com.

Display "Thankful for Gifts" at the Caribou Historical Center and Museum, featuring many donated items from recent years. The rest of the collections -- 10,000-plus items -- also available for viewing. Open 12-4 p.m.

Craft fairs, 9 a.m.-4 p.m. Holiday Craft Fair at Northern Maine Community College; Downtown Craft Fair at Northeastland Hotel.

Annual Holiday Light Parade, starting at 6 p.m. from the University of Maine at Presque Isle. Bring unwrapped toys for Santa's elves to collect.

St. Mary's annual craft fair, 9 a.m.-2 p.m. at St. Anthony's Hall, with luncheon 11 a.m.-1 p.m. FMI: Anita Levesque, 694-0314.

Benefit supper for Dean Hardy, followed by an auction, 4-7 p.m. at the Oakfield Snow Sled Club, 317 Oakfield/Smyrna Road. FMI, or to volunteer or donate, contact Jacquelyn at 538-1974 or Billy at 570-0079.

Annual Christmas Tea at the Limestone/Caswell Historical Society, 1-3 p.m. Program on history of the Yankee Swap. Caroling, tea and dessert following the program. All ages welcome.

Holiday craft workshops at Francis Malcolm Science Center, 9 or 10:30 a.m. Make a wreath, centerpiece or swag. Reservations required. Cost: $15, large centerpiece or wreath; $8, small centerpiece or swag. FMI: 488-5451, visit the center on Facebook or email tricia@francismalcolmsciencecenter.com.

Family Gingerbread Festival at Wintergreen Arts Center. Three sessions: 10 and 11:30 a.m. and 1 p.m. Cost: $20 per kit; includes preassembled house, two gingerbread people, royal icing and access to candy decor. Cocoa, games and face painting. FMI: wintergreenarts.org, Facebook or 762-3576.

Christmas bazaar at Grant Memorial United Methodist Church, 79 Fleetwood St., 9 a.m.-2 p.m. Cinnamon rolls, 9-10 a.m.; soup lunch, 11-1. Gift baskets, craft, bake sale, 'Gramma's Attic."

Caribou Choral Society's 41st annual holiday concert series, "Ring Those Christmas Bells," 3 p.m. at St. Louis Church.

Annual Family Advent Festival at the Limestone United Methodist Church, 4-6 p.m. Spaghetti supper hosted by United Methodist Men; carol singing; crafts; fellowship. FMI: 325-4870.

Christmas Cantata, "Together for Christmas," 2 p.m. at Washburn Memorial Church by WMC Community Choir. Refreshment and fellowship after the performance. Free; all are welcome.

Family Code Night at Hardscrabble Solutions, 5-7 p.m. Free to all; attendees will receive USB wrist bands with resources. Children must be accompanied by adults; families should bring own tablet/laptop. Register online or call 227-7388.

2017 Potato Pest Management Conference at the Presque Isle Inn & Convention Center, 8:30 a.m. registration, program begins 9 a.m.

An evening with Cathie Pelletier at the Mark & Emily Turner Memorial Library, 6-8 p.m., on Virginia of "Yes, Virginia, there is a Santa Claus." Wine, cheese, sweets, with music from classical violinist Timothy Scheidler.

The Grinch is coming to Family Reading NIght at the Mill Pond School Library, 6:30 p.m. Come in your pajamas; enjoy a story, craft and snack. Children must be accompanied by an adult.

Wintergreen "Polar Express" offers children a round-trip ride through Presque Isle to the North Pole at Wintergreen Arts Center, where they can enjoy hot cocoa, meet Santa and decorate cookies. Begins at UMPI's Gentile Hall. Tickets available online at msad1.coursestorm.com.

Senior Auction at Hodgdon High School, 6 p.m. Benefits Class of 2018. Gift certificates, potting table, handmade bench and more.

Wintergreen "Polar Express" offers children a round-trip ride through Presque Isle to the North Pole at Wintergreen Arts Center, where they can enjoy hot cocoa, meet Santa and decorate cookies. Begins at UMPI's Gentile Hall. Tickets available online at msad1.coursestorm.com.

Pancake breakfast with Santa at Houlton Southside cafeteria, 8-10:30 a.m., sponsored by Houlton Project Graduation parents. Cost: $5/person. Bring letters to Santa for mailing; make reindeer food. Parents, bring cameras for pictures with Santa.

Display "Thankful for Gifts" at the Caribou Historical Center and Museum, featuring many donated items from recent years. The rest of the collections -- 10,000-plus items -- also available for viewing. Open 12-4 p.m.

"The Christmas Star" program at the Francis Malcolm Science Center, 11 a.m. Festive and astronomical look at holiday traditions and the Star of Bethlehem. Reservations requested; call 488-5451 or email tricia@francismalcolmsciencecenter.com.

Caribou Choral Society's 41st annual holiday concert series, "Ring Those Christmas Bells," 7 p.m. at Holy Rosary Church.

Caribou Choral Society's 41st annual holiday concert series, "Ring Those Christmas Bells," 3 p.m. at St. Mary's Church.

Smoki-Haulers Snowmobile Club meeting, 7 p.m.

Pleasant Ridge Riders Snowmobile Club monthly meeting at the clubhouse, 17 Pleasant Ridge Rd., 7 p.m.

Special meeting of the Limestone Board of Selectmen, 6:30 p.m., Limestone Town Office.

Winter Holiday Party to celebrate the first season of Local Writers at the Library, at Mark & Emily Turner Memorial Library, 6-8 p.m. Free and open to the public; light refreshments. Featured writer: Martie Pritchard.

Meeting of the Presque Isle Housing Authority Board of Commissioners, 5 p.m. at 58 Birch St.

Southern Aroostook Community School elementary Christmas concert, 6:30 p.m. at the SACS multipurpose room. Students in pre-K to grade 5. Free. FMI: knoyes@rsu50.org or 757-8206.

Wintergreen "Polar Express" offers children a round-trip ride through Presque Isle to the North Pole at Wintergreen Arts Center, where they can enjoy hot cocoa, meet Santa and decorate cookies. Begins at UMPI's Gentile Hall. Tickets available online at msad1.coursestorm.com.

Victorian Christmas at the Estey, hosted by Presque Isle Historical Society, 6-9 p.m. at the Vera Estey House, 16 Third St. Live history demonstrations, live music, scavenger hunt. Tickets $10; available at museum.

Display "Thankful for Gifts" at the Caribou Historical Center and Museum, featuring many donated items from recent years. The rest of the collections -- 10,000-plus items -- also available for viewing. Open 12-4 p.m.

Victorian Christmas at the Estey, hosted by Presque Isle Historical Society, 6-9 p.m. at the Vera Estey House, 16 Third St. Live history demonstrations, live music, scavenger hunt. Tickets $10; available at museum.

Wintergreen "Polar Express" offers children a round-trip ride through Presque Isle to the North Pole at Wintergreen Arts Center, where they can enjoy hot cocoa, meet Santa and decorate cookies. Begins at UMPI's Gentile Hall. Tickets available online at msad1.coursestorm.com.

Santa's Breakfast at the Mill Pond Elementary School gym, 8 a.m.-12 p.m., for kids in grades Pre-K-6. Games, breakfast, music and visits with Santa. All children must be accompanied by an adult; $5 per child; $2 for adults.

County Country Christmas at the Castle Hill Advent Christian Church, 5 Richardson Rd., 7 p.m.

Heart of Praise in concert at County Road Baptist Church, 6 p.m. This local group will sing familiar songs as well as Christmas music. Free to the public; free-will offering taken to support their ministry.

Everyone Cares free community dinner, 3-4 p.m. at the Houlton Rec. Center. All are welcome.

American Red Cross blood drive, Caribou Inn and Convention Center, 12-6 p.m. Download the American Red Cross Blood Donor app, visit redcrossblood.org or call 1 (800) RED CROSS for information or to make an appointment.

American Red Cross blood drive, Presque Isle High School, 9 a.m.-2 p.m. Download the American Red Cross Blood Donor app, visit redcrossblood.org or call 1 (800) RED CROSS for information or to make an appointment.

Meduxnekeag Ramblers meeting, 6 p.m. Yankee swap.

American Red Cross blood drive, Caribou High School, 9 a.m.-2 p.m. Download the American Red Cross Blood Donor app, visit redcrossblood.org or call 1 (800) RED CROSS for information or to make an appointment.

Special meeting of the SAD 1 Board of Directors, 5 p.m. in the ATM Room at Presque Isle High School.

Creative Writing and Drawing Club at the Caribou Public Library, 3:30-5 p.m. in the Caribou Room. Meets third Thursday each month.

Monthly Creative Arts Club for school-age students, sponsored by Caribou Public Library and Ryan Palmer, every third Thursday, 2-3:30 p.m. New sketchbook and membership card to new members. Membership is free to all.

Story Time with Mrs. Claus at Robert A. Frost Memorial Library, 3 p.m. Enjoy a story, snack, Christmas craft and games. FMI: 325-4706.

Opening reception for show of Evelyn Kok's work at the Mark & Emily Turner Memorial Library, 5-8 p.m. Proceeds benefit the library and creation of an Evelyn Kok museum.

Display "Thankful for Gifts" at the Caribou Historical Center and Museum, featuring many donated items from recent years. The rest of the collections -- 10,000-plus items -- also available for viewing. Open 12-4 p.m.

Hour of Code + Winter Break Day Camp for Kidz, HardScrabble Solutions, Presque Isle. Register for one or more sessions: Mornings, 9 a.m.-12 noon; afternoons, 1-4 p.m. FMI: 227-7388 or email info@hardscrabblesolutions.org.

Knitting/Crochet Club at the Robert A. Frost Memorial Library, 6 p.m. Teachers available for those who want to learn. FMI: Call 325-4706 or email fml@limestonemaine.org.

Display "Thankful for Gifts" at the Caribou Historical Center and Museum, featuring many donated items from recent years. The rest of the collections -- 10,000-plus items -- also available for viewing. Open 12-4 p.m.