These cute thank you notes were a big hit and so easy that my not-quite 2 year olds were able to participate. I just had the girls finger paint with red and white on green paper. I cut several Christmas trees out of each finger painting and let the girls help me glue the trees on blank cards. We got the prefold cards with envelopes in a pack of 50 from Hobby Lobby for $5. So cheap, so easy, so cute.