Is it because the glow would fade after a year or two? Even if it’s not cost effective compared to adding to LEDs I thought it would be a novelty thing.
I did a quick search online and it doesn’t seem very common. Mostly keyboard covers.
1 point
EBay, though you can usually find them on Amazon just as cheap, and I’ve seen them at Staples and office depot before at actual stores.
This is similar to the ones I got
Not specifically endorsing any given seller or anything, just picking one as an example
