The coffee cup-shaped power inverter isn’t a completely new concept, but it continues to make a great gift for anyone who spends a lot of time in the car and never seems to be able to keep all their gadgets charged. Plug the $35 inverter into your car’s cigarette lighter, place it in your cup holder and then enjoy two standard power sockets and a USB charging port. You’ll get 200 watts of juice to play with, which should be more than enough for a cell phone, a tablet and a laptop at the very least.