

Most printers with networking capability work well these days. Some even entirely without drivers (thanks to Apple for once). HP should be fine if it’s relatively new. Older printers can be a major pain in the ass.
Scanners access is now also finally easy with AirScan (again thanks Apple, and I don’t say this often), so some devices might just magically work. More likely you’ll need to edit a line or two in a SANE config file somewhere or deal with the horrible web interface of CUPS to configure the printer, but with the right device, there’s finally no hunting for drivers on obscure web archives of Chinese manufacturer pages anymore.
I use KOreader on an Android phone because it’s so configurable and allows me to read efficiently on an AMOLED with white on black text and a very minimal, space efficient interface. Also the large amount of style overrides allows one to fix even the most badly formatted epubs without editing or processing them in Calibre.