"USB keylogger hardware solutions - AirDrive Keyboard and Mouse Jiggler
The AirDrive Mouse Jiggler is a small and discreet USB device preventing the
screen-saver from activating and the computer from going to sleep.
It works as a USB mouse mover and makes an unnoticeable cursor movement every
few minutes. Works out-of-the-box, does not require any software, compatible
with all operating systems and USB 3.0."