This sweet USB stick concept lets you see what's on it without having to plug it into a computer. The glass "screen" on its surface shows what kind of files are on board by color: pink for images, blue for documents, green for movie files and so on. They all fill the space on the back proportionally so you can see which ones are taking up all that room.

Of course, to see the colors when it's not plugged in would require some kind of battery, which would certainly elevate the price a lot higher than your average USB stick. But man, it sure is cool. That's enough to justify a lot.

Petit Invention via Core77