Constructed by HackADay user mircemk using as many 3D printed parts as possible, this self-balancing cube uses an Arduino Nano microcontroller and MPU6050 gyroscope / accelerometer to control 3 motor-driven reaction wheels to keep itself balanced — even standing on one corner on a slope! Me? I can’t stand on one foot for longer than a few seconds. “Thank God you’re not a flamingo.” I count my lucky stars every day.

Thanks to my dad, who’s already 3D printed me a bunch of skulls to decorate my office.