Amazon.com : ETHU Keyboard Tray Under Desk, 26.77" X 11.81" Large Size Keyboard Tray with C Clamp-on Mount Easy to Install, Computer Keyboard Stand, Ergonomic Keyboard Tray for Home and Office (Black) :
Why Keyboard Trays Are Still Useful, Even if They're Not Cool
WorkEZ Keyboard and Mouse Tray ergonomic on-desk | Ubuy Hong Kong
AboveTEK Large Keyboard Tray Under Desk with Wrist Rest, 26.7"×11" Ergonomic Desk Computer Keyboard Stand with Sturdy C Clamp Mount System, Slide-Out Drawer Keyboard Mouse Holder for Office (Black) : Amazon.co.uk: Computers