Names, words, designs, messages, images can all be cut from your foam material and applied as shown. Other possibilities would be to get some stone "...
We all use some canned foods from time to time. And we all probably use empty cans for one purpose or another. This instructable shows how to decorate cans to be used as organizers for pencils, pens, paint brushes, etc. It's a simple thing to do, and children would especially have fun making their creations.
Step 1: Collect some Cans Destined for the Recycle Bin
Size doesn't matter, regular 14oz, is a good size, but all can be used. I prime the can with a good primer as a binder for the glue to be used.