Did this today with all the kids' thumb prints around the tree as leaves (on white canvas, used a regular/washable ink pad) for their fabulous teacher. Turned out pretty cute from someone whose trees have been drawn the exact same way for the past 20 years!
Make your own coasters- 4×4 tiles ($.16 Home Depot); 4×4 scrapbook paper; adhere to tile with Mod Podge and let dry; Spray a coat of clear spray paint and let dry; attach felt pads to the bottom. Great Christmas gift idea! I am totally doing this @ Do It Yourself Remodeling Ideas