https://motherboard.vice.com/en_us/article/d3bnb7/this-guy-made-a-computer-mouse-that-is-itself-a-computer

A YouTube user who goes by Electronic Grenade has pushed frontiers of mobile computing to absurd limits by designing a computer mouse that is also a functional laptop.

As detailed in a video published on Sunday, the computer mouse computer consists of a 3d-printed mouse, a Raspberry Pi microcontroller, a small keyboard, and a handful of components that were taken from a normal computer mouse.