The RootBoard is a handheld computer kit with a 3.5 inch color display, a 70-key thumb keyboard complete with function keys, and a built-in speaker plus what looks like a decent set of ports for such a small computer. RootBoard designer Dian Lieu is running a Kickstarter crowdfunding campaign for the device with reward levels starting as low as $115. But you'll need to supply your own battery, microSD card, and... computer. That's because the kit doesn't have a built-in CPU, memory, or storage. Instead it's designed to work with a Raspberry Pi Zero, Zero W, or Zero 2 W.