Rechargeable batteries without your usual recharger
There’s a lot of USB gadgets out there but this has to be one of the most useful I’ve noticed for a while. The USBCELL batteries are rechargable AA NiMH 1.2v 1300mah batteries that can be recharged via the USB port on your computer. Unfortunately they take 5 hours to reach a 90% charge but, if you’re someone that travels with a laptop anyway, at least it’s saves travelling around with a recharger too.