I usually go through about three keyboards for every computer I've had. I have one ordered for my laptop right now. The shop gave me an old stand alone usb keyboard to use in the meantime. I LOVE it! I've forgotten how easy it was to type on a real rather than flush pad.
that said I've tried all kinds of stuff, ,most recently a paint pen. wears off really fast. I can't put a paper on these as the keys are now missing entirely. Good luck!
edited to add: I've always wiped the keys with rubbing alcohol to get any skin oil off them before painting or whatever...
Last edited by KalamaQuilts; 11-02-2018 at 02:26 PM.