What To Do With Puffed Rice

I made a cereal bar recipe that called for puffed rice cereal (not rice krispies). It was very good, but it made a lot, so I won’t be making it again for a while. Meanwhile, I have a large box of puffed rice (minus 2 cups). It’s not very good “eating” — it just turns to mush when you put milk on it. SO — any ideas what I can do with the rest of the puffed rice? I’m thinking it is going to be stale by the time I make the cereal bars again.