This is a product that I could do with, as I seem to have this problem where the “A” disappears from the keyboard, it is the only key that it happens to so these glowing keyboard stickers would be ideal. They are easy to use and remove without leaving behind any glue; they can be cut down to fit almost any keyboard.
Here are the features and facts for the glowing keyboard stickers:
•High quality fluorescent print reflects any ambient source – no matter how small.
•Eases eye fatigue while typing in low-light levels.
•Matte surface that is pleasant to touch.
•Easy to apply – just peel and stick (yet allows for a clean full removal with no sticky residue).
•Can be trimmed to fit non-standard keyboards.
•Dimensions: (full sticker sheet) – 9.5″ x 4″
Priced at $9.99
Source [Think Geek]