Mechanical keyboards are brilliant. If you agree, you probably have one on your desk right now - and we have just the deal for you. SteelSeries' PrismCaps are an awesome upgrade over your stock keycaps, offering high-quality PBT construction, backlit legends and a beautiful two-tone 'pudding cup' design that looks great, especially with an RGB keyboard.
Normally a full keycap set of PrismCaps will cost you $30, but as an early Black Friday deal you can find these keycaps for 50% off - just $15. At that price, these are in impulse buy territory for me, as they'll provide an immediate uplift over your existing keycaps and last for decades.