Since I need a clock for my shop I’m only going to include LEDs for a twelve-hour time display. But I did plan to populate the entire grid with diffusers (ping-pong-balls) because it will look a ...

But what if you could also play a game with them? Tobias Fränzel designed a door that flips open horizontally to turn into a ping-pong table. It's narrow, but good for a quick match. Written by ...