There is so much cool, cute and innovative idea on USB related products. Here is some of them who catches my attention while I was searching for something else :P.
A mini USB operated fridge to cool your soda.
A USB exercise mouse measuring your speed while you type.
Test your pregnacy with a Digital USB Gadget. Here
USB operated vacuum cleaner
A yummy looking USB Christmas Cake drive. Here
A USB mirrored compact card reader for HER. Here
This is a cute mushroom USB Micro Reader. Here