YouTuber Electo made their second-ever mouse-as-a-PC build project and shared it on YouTube. The PC, which is contained in a mouse shell about twice the size of a standard mouse with an attached screen, is based on a pocket Windows 11 machine.

https://www.tomshardware.com/peripherals/mice/this-bulky-mouse-has-a-computer-inside-and-it-also-boasts-a-built-in-screen