I love my Gadgets! From my laptop to my palm pilot I have to have something to make it unique. I just read my Best Bets from New York Magazine and they recommend this great site, giantrobot.com that has fun stickers that can be used on laptops, palm pilots, blackberry's, sidekicks, ipods and more...it's all about personalization!
I have also purchased a really cute Schticker for my laptop at www.schtickers.com. (They also have stickers for ipods too!) Check this site out for a variety of images. (see image I bought above:)