Here is what we did with some of ours:
First off, we started most of our projects using metal can lids that came from frozen concentrated juice. (Before they switched to putting most of them in plastic). Recently, we have added to our collection with lids from canned food items. The reason we have been able to do this is that we now have a safety can opener that cuts the lids without creating a sharp edge. You can buy a wide variety of safety can openers, ours is this one from Tupperware.
We have made so many different things with these lids, here are just a few suggestions….
Make “Me” Magnets. Make sure that you supply a wide variety of different skin colored paints, let the children paint, glue, etc with a wide variety of materials to make a face that looks like them! We used heavy duty circle magnets glued to the back. (This one has seen better days… but you get the idea)
Use the “medallions” from above instead of a “potty chart” for our little ones who are toilet training. We start with a plain medal and children are allowed to add stickers each time they attempt to use the toilet. I try to buy stickers that are very shiny for this option. Unlike the paper potty charts that often get thrown away, our little ones are so proud of their medallions and they love to wear them and show off their accomplishment!
Use the “medallions” as name tags to be decorated at a workshop/conference :).