Paper (we used cardboard)
1. We made Autumn trees so we painted brown paint from our elbows to our fingertips to make our tree trunks and branches
2. next have the egg cartons pre cut in segments easy for kids to handle
3. Have the children dip the cartons in paint and use them to make "leaf" prints on their trees
For more fun egg carton art check out this post by Teach Preschool and this post too.