[Kubbur87] put together a guide to replacing the Non-touch Kindle 4 screensavers with your own ... the newest version of Kindle Hardware, this hack lets you use your own 600×800 Portable Network ...
His computer’s optical mouse resides inside a wooden frame, and is periodically swept from side to side by an ATmega-controlled servo, keeping the screensaver permanently at bay. Call it a hack ...