Use of my first Raspberry Pi is a print server. I used it for both scanner, printer and 3D printing. Here are some useful resources to setup your own.
Using as a print server (even with airprint) :
- http://www.macg.co/mat%C3%A9riel/2013/03/macberry-pi-utiliser-un-raspberry-pi-comme-serveur-airprint-77055 [French]
Using as a scanner server :
Using as a 3D printer server :