Electronic Grenade is a YouTube user with a knack for fun, interesting and sometimes weird electronic projects. In his last endeavour, he succeeded at creating a 3D-printed mouse computer which is controlled by the mouse itself. The mouse-shaped enclosure hosts a fully working peripheral and a Raspberry Pi Zero W, which is attached to a tiny OLED display while connecting to a small external keyboard via Bluetooth. ““Even though the screen is attached to the mouse, the sensitivity makes it not that hard to follow along with what is happening on the screen,” says Electronic Grenade in the video where he describes his useless but fun invention.