Spencer Organ got hold of an Inky pHAT three-colour e-ink display from Pimoroni (also available from The Pi Hut) and wrote a script which takes a random quote from a file of quotes and cuts it up into the appropriate length for display. The quotes list he uses is Bible verses, but you can replace that with secular motivational quotes if you’d prefer! You can read more about it here and the code is available on GitHub.