The thread on everyone's controller collection has inspired me to ask an important question.
I'm finding that with my controller collection, some of the devices aren't working as well as they used to, which I believe is simply because they have been locked away in storage, mostly inside (but occasionally in a garage) for a long time. So, in general speaking, what are the best tools and methods you use to clean up these controllers and help restore them to their original working order again?