These are awesome and so easy to use! Had my class help create a display outside our class room in the hall. We an undersea theme and I had each student draw a fish or a plant on the foam and color in using markers then stamp it onto a large piece of paper. They did this over & over using different colors and it turned out so nice a lot of fun! The class pack was definitely the way to go so I had plenty left over to do another project. Will be purchasing this again in a couple months! Thank you its a great product!