So we made some Christmas cards, but didn't get our act together to post them! Ok, my excuse is pregnancy brain and severe nausea.
We made star stamps out of foam , but you can push a star cookie cutter into a potato for similar effect. Dipped them in glue and stamped them then threw glitter all over the place and let them dry.
Voila - sparkly christmas cards! Easy enough for really little ones to join in.