Laurent Bourrelly, who likes to collect a few Apple-related things, had a great idea for a USB memory stick: how about make one out of some old Mac junk?
Here’s the result: the command key stick. If you want to make your own, Laurent has published some instructions – they’re in French, but you’ll be fine with just the pictures.
Then again, if you can read French, you might enjoy Laurent’s blog about all things Apple: pomme-c.