Shatterproof ornament for classroom activity

I'm doing two projects for Nater's Kindergarten Christmas party.  The first one is a thumbprint reindeer ornament.  I bought some silver & gold shatterproof ornments at Hobby Lobby for 50% off, a brown Staz-on ink pad, red, brown & black sharpie markers, and red and green ribbon to make these.  I think the kids will enjoy them.  Here is the sample we made at home today