The Keychron K12 mechanical keyboard features a compact 60% layout, hot-swappable keycaps, and a 200-hour battery life for just $43 from Amazon's Woot.

The $100 Raspberry Pi Monitor features a 15.6-inch full HD ... Other features of the Raspberry Pi 500 computer keyboard ...

Sure, you still need a power supply, monitor, and mouse, but it’s a lot more of a stand-alone computer than the Pi Model B. It’s made of high-quality plastic, with a decent keyboard.