Three ways to put your own personal accent on your stuff...

Colorware lets you buy the same iPods and laptops you can get from other places, but in in a wide variety of colors.

This one's for the kids. Lego Factory is software you download to create your own model, then order the set of bricks to make it. (But remember, like Aquaman said, be careful what you call them, they can get cranky)

And finally, this place is just fucking great. I was in a Crumpler store last weekend. Their bags are awesome, and you can actually give them any design, and they'll incorporate it into a bag right there. The site's pretty cool too. Check out the kitten shooting game