FightBox R5 USB Arcade Spinner Controller for MAME RetroArch PC Raspberry Pi

R6-Right Trackball Controller

FightBox R10 Arcade Fightstick with Trackball – Retro Controller PC/PS3

2 Player Arcade Button & Joystick Kit USB Encoder DIY MAME Raspberry Pi

X-Arcade Arcade2TV-XR VR Controller, 2 Tankstick And Trackball, Works w/ VR

Hikig 2 Player LED Arcade Buttons and Joysticks DIY Kit for MAME & Raspberry Pi

RAC-J200S 6-Button Joystick – 15-Pin Arcade Controller for Neo Geo AES/MVS

Qenker 2-Player LED Arcade Game DIY Kit for USB MAME PC & Mixed Color