If your plan is to use the Retro Kiosk where it is not watched over closely, this stainless steel ATM type keyboard may be a best bet. It is a bit stiff and clicky, but it works, and the touchpad works great too. This is also wired, so you don't have to worry about batteries or connectivity. The wireless keyboards are really frail. Has no function keys to prevent someone messing with the computer. Will be installed under graphics with just the keyboard poking through.