Kodak Brownie Hawkeye Flash

I picked this up in 1976 and was the first Kodak Brownie Hawkeye Flash I'd ever owned - it was my second camera. I still like the simplicity of these cameras and still use them to this day. Only, now I have 8 of them. I'm trying to use each one, but it takes so long to get through them and all my other cameras. My goal is to be able to say I've used each camera in my collection.