RetroFun! Connect joystick Pegasus Sega Commodore to PC USB New | eBay
Amazon.com: The C64 Micro Switch Joystick (Electronic Games) : Video Games
TheC64 Micro Switch Joystick
Arduino Project: Commodore 64/Amiga, Atari 2600/XL/ST, ZX Spectrum Joystick to Windows/Linux (RetroPie) USB | jfrmilner's Tech Blog
USB Joystick Adapter from Retronic Design on Tindie
USB Joystick Adapters – breadbox64.com
USBJoy2.0 - adapter. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
C64 Mini review - USB & HDMI Commodore 64 | Rock Paper Shotgun