Sorry looking Gameboy?
Have a sorry looking Gameboy? They are dead easy to refurb,
You can buy new plastic covers for the screens from Ebay. All you need is a special Nintendo tri-winged screwdriver, pull her apart, wash the case and clean the electronics with IPA and you'll have a Gameboy as good as new in no time.
Did it myself the other week. Bought a filthy unit that was very sorry for itself with buttons that barely worked. An hour later it was as good as new.