Hike through the woods along “Reindeer Trail” and try your skills against four-legged friends in this family-friendly adventure. Warm up inside with a snack, make a seasonal craft and get a photo with Santa. Children must be accompanied by a registered adult. 10 a.m. to noon. Robinson Nature Center, 6692 Cedar Lane, Columbia. Child, $5; adult, $15. 410-313-0400.