I picked up a pair of these old ammo canisters the Army uses. They were cheap, fairly light, and waterproof, so I thought they'd make good pannier bags. Thing is, I don't have the first idea how to go about attaching them to the bike. Ideally, I'd be able to detach them when needed... otherwise, I want them well enough secured on the bike that I don't have to worry about them getting easily pulled off.
Has anyone tried anything like this before, or have any ideas how I could go about this? I don't have too much in the way of tools, but I think it's a cool idea to try.
Oh, and I'm new. Hi!