I read something awhile back about the Ronald McDonald houses being able to use them for something. I forget all of the story other than Ronald McDonald houses and the pop can tops, LOL...I've been saving them myself ever since just in case I find out where to send them
. Maybe check online and you could send them to them or something. I figured when I had a lot of them (we don't drink much soda here) I'd look it up.
Or maybe check with some of the rest homes/senior centers to see if they could use them for crafts.