This open-source printer you can repair yourself is powered by a Raspberry Pi Zero W
(www.xda-developers.com)
Is there a real need to have paper over plastic at this point? So many things now require a plastic piece. Not seeing where paper is still being used to retain records or utilized for gaskets… I suppose cardboard but even then not much has changed in that tech.
3D Printers that are turned into Pen Plotters is also a neat project.