“Farkle” – a combination of “Functional” and “Sparkle”, refers to all the parts we add to a bike, some necessary, others questionable. I’ve also seen it as (F)unctional (A)ccessory, (R)eally (K)ool, (L)ikely (E)xpensive.
Some people take it to the extreme:
But they don’t have the personalized plate. I do!