Full Size Wireless Keyboard with Trackpad : ID 2876 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Raspberry Pi Trackpad From Salvaged Trackpad Plus Arduino | Hackaday
USB Mini Wireless Touchpad
Miniature Wireless USB Keyboard with Touchpad – Shop Iowa
DIY *USB* 4-PIN Mini Computer 2-button Mouse TOUCHPAD XD3698-01 Laptop PC Mac HP | eBay
DIY *USB* 4-PIN Mini Computer 2-button Mouse TOUCHPAD XD3698-01 Laptop PC Mac HP | eBay
XGZ DIY Brand 1200*600*3MM Large Size Black Gaming Mouse Pad PC Digital Mechanical Keyboard Laptop Pad USB Trackball Speed Mat|Mouse Pads| - AliExpress
DIY a USB Thinkpad keyboard with backlit and touchpad from X1 tablet keyboard : r/thinkpad