Connect a rotary dial telephone from the 80s to a cheap cellphone with an Arduino.

Alteration of the exercise bike for games on the PC, in car simulators and others.

Don't focus too hard! Beer pong game that gets easier as you drink!

They took our jobs, they will take our fun!

Control 55 RGB LEDs on the tree, let Santa twerk, control a model railroad, bus and balloon, or send your personal message to the display.