Extract Components From a 3-in-1 Printer
Made this an answer by request...

Any electronic component/device can be re-used, it's just a question of what's worth using vs the time &amp; effort required. I made the paper feed mechanics of one into a barrel polisher. Using the head/feed mechanism(s) from printers/scanners as the axes for 3D printers or CNC mills/cutters is popular (see Hackaday.com).

Also see Tim Hunkin's website for various genius ideas.