I’m a big fan of using older small form factor commercial office grade laser printers. You can basically get them free, especially if they lack wifi and usb, and most of the time they’ll last for years and years of hard use with essentially no maintenance- you can just drill a hole in the toner cartridge and pour toner in.

This. I have one and I think it may outlive me. That thing has been working flawlessly for over a decade.