Here is a 56-bit electric screwdriver that you can use to fix gadgets and take on a variety of DIY tasks. The Wowstick looks like a sleek pen with an aluminum alloy unibody and screwless design. It has manual and automatic modes, with rotational speed of 200RPM. The Wowstick comes with 3 LED lights too.
The battery lasts up to 6 hours. The device weighs only 50 grams. You can find out more about it here.