I use a Bastard Keyboard Charybdis Nano. It's an ergo 3x5 keyboard with built in trackball. I built it myself but you can get them pre built too. https://githu

I use a Bastard Keyboard Charybdis Nano. It's an ergo 3x5 keyboard with built in trackball. I built it myself but you can get them pre built too. https://github.com/Bastardkb/Charybdis https://github.com/Bastardkb/Charybdis