If you have mechanical keyboards, especially with Cherry MX switches and friends/clones, there are many good modifications that you can do to make it much better to type on. This note is about how you lubricate various parts of the mechanical keyboard. Lubricating various parts of mechanical keyboards offer better typing feels in the long run (smoother, softer), making the typing sound relatively quieter (especially space bar and modifiers). The two main parts of mechanical keyboards that will produce better outcomes if lubed are switches and stabilizers.
Technically, the choices of lubricants depend on which part that you want to do the lubrication. However, personally I just use grease, like Super Lube (cheap and good enough), for everything, and I like the outcomes.