I have been collecting bottle caps while monitoring lunch for about a month. I think I have close to 2,000. The kids keep asking what we're doing with them, so today I made a display in the hallway case near the cafeteria to get them excited about the mini-murals we will be starting soon.
The top row says "happy holidays" with a candy cane and a stocking. The bottom shelf has a snowflake, tree and menorah. It was so much fun to overhear the kids talking about it in the hallway. I think I'm going to let them play with the caps for a few weeks as an art center activity before we work on our designs.