24 days of Thinking Putty surprises await you with this Crazy Aaron’s Advent Calendar. You'll create a brand new holiday putty every three days as you uncover mystery Thinking Putty, bags of fun mix-in pieces, and even surprise holiday charms to complete your putties! Advent Calendar Includes: 8 tins with 1/34 lb. of clear base putties with silver glitter. 8 bags of holiday themed mix-ins. 8 larger holiday-themed charms. Ages 3+.