I designed and 3D printed an ergonomic split keyboard : r/MechanicalKeyboards
Microsoft ergonomic keyboard, found in a closet at my parents'. There are instructions on avoiding repetitive stress injury on the back of it. : r/MechanicalKeyboards
ErgoMechBoards
Designer Keyboard - Wireless Split 3D Ergo Keyboard - Coming soon on Kickstarter! : r/MechanicalKeyboards