TL;DR
YouTuber Retro Dad has created a DIY handheld version of the iconic Commodore 64 (C64) using a Raspberry Pi 3 Model B. This project combines modern technology with retro gaming by featuring a physical keyboard, gaming controls, and authentic joystick ports, all housed in a custom 3D-printed enclosure. The build is entirely open source, complete with printable case files, wiring diagrams, and a detailed guide for anyone interested in recreating it.