ESP32 Refines Game Boy Bluetooth Adapter | Hackaday
Amazon.com: Gameboy Advance SP Charger, Home Wall Charger for Switch Gameboy Advance Gameboy Advance SP Game Console, Portable Mini AC Adapter Travel Charger Fit for SP, DC 5.2V, 450mA : Video Games
Found old TV-Adapter for Gameboy classic : r/Gameboy
Nintendo Gameboy 4 Player Adapter Link Cable DMG-07 Game Boy - Etsy