A decent way clean some surface rust off chrome is with water and tinfoil. Yeah it works pretty well. One day maybe I'll own a nice shiny new bike, but I don't see that happening any time soon. I like my bikes rusty and rattly - like a bucket of nails. The rattlier the better.
And then there's duct tape.
'Maintenance', heh. Cobain and I used to have a joke about...no, I better not.