There are certain household items that are under-utilized to the extreme. For years we've been wasting all of furniture polish's potential on, of all things, furniture. In fact, it can solve all kinds of problems:

If your PDA is scratched and dirty
Palmtops suggests using furniture polish to clean your PDA. It'll buff out the scratches and protect your screen. Test on small area first.

If your vacuum cleaner is hard to push
Vacorama explains It's one of two things: either the belt is slipping and not pushing through the rug properly or the bottom plate is dirty. If it's the belt, replace it. If it's a dirty bottom plate, clean it off and then polish with furniture polish.