Got an old laptop or a netbook without backlit keys? So inconvenient! How did we get by for 20 years without them? If they’re truly indispensable to you, there are a number of hacks you can undertake, but wiring power and lighting and all that can get mighty complicated, and of course every laptop is different. But if you’re slightly less scrupulous about your methods… these stickers ought to do the trick.
I know, I know. Pretty weak… but they’re no worse than the keys you already have, and under the right circumstances they might be a little better. I do have to say, though, if you have light around to “charge” the keys, why are you typing in the dark? Not quite as nonsensical as the submarine screen door and other inventions, but all things considered, actual backlighting is probably the superior option.