Amazon.com: Keyboard with Trackball Mouse, Wireless Multimedia Keypad QWERTY Layout, Mini USB Keyboard with Builtin Receiver Range 10m, for Smart TV, Computer, for Windows 2000 / XP / Vista / 7 : Electronics
Desktop keyboard - MKA-60-BM - MATE TECHNOLOGY SHENZHEN LIMITED - with mechanical keys / with 2 mouse keys / with trackball
Tesoro G6TL Keyboard with Trackball
CHERRY G84-4420 Compact-Keyboard
This Odd-Looking DIY Keyboard Features a Built-In Trackball - Hackster.io