Footswitch toppers are colorful plastic bumpers intended to be put on the footswitch of your pedals.Some guys are using them for the “hard to reach” footswitches which might otherwise require a tactically aimed big toe to successfully engage without disturbing anything else.

Some people just like them as a bit of fun or as a way for them to pimp up their pedals. Practical or purely cosmetic purposes, it’s entirely up to the user what to use it for….