Robots are cool, so check out [Atlin Anderson]’s Spiderbot (video, embedded below) which can be made with 3D printed parts, hobby servos ... this 1/64 scale micro RC car to an oddball tripod ...

Drift cars are cool ... True to the DIY ethos, an Arduino-based RC system is used to drive the steering servo and motor speed controller, with a home-built pistol-grip controller.