Keep it away from magnets. It's surpising how many people don't know that speakers are magnets. I know people who think that a subwoofer (the biggest magnet you can find in a speaker) makes a great table for an iPod.
Also, if you buy a iSkin made by the actual brand iSkin, not just the cheap rip-offs, they absorb a lot of shock if you're careless and drop it. Just "bumping" an iPod won't hurt it. People jog with them and it doesn't hurt them, just don't drop it, crush it, or put it by magnets.