The boys made these simple Christmas tree cards yesterday to give to their teachers at school and church. I googled Christmas cards that kids can made and found the idea here. I just cut up strips of Christmas themed scrapbook paper, and the boys glued them on. Then they used a star shaped stamp dipped in yellow paint to put a star at the top.
Putting all the materials in a muffin pan made it much easier for the boys to make sure they had one strip of each size to make their trees. This craft went really fast, which was good because we happened to be crunched for time! :)