What’s your vote for the most ridiculous, overpriced, and useless tweak?

For those using audiophile quality outlet covers and screws, are you using them on all outlets common to a breaker?  If not, do you notice any outlet cover sound degradation from receptacle cover cross contamination?

Maybe this is better? Wordsmithing one adjective, "the better the system the less obvious the effects of a tweak should be."

I find it rather curious that the standard byline is "the better the system the more it needs tweaks".  One might think the opposite should be true.  

^^^ The two sides will never meet.  Where some consider it a special person with a sense of adventure and curiosity to experiment with some of the more, "bizarre" tweaks, others just consider this the "freak side show" of audio.

But above all, its your money and you spend it however you like.

Another Saturday and I guess you must be using your special powers once again.  But one would expect no less from the sorcerer with a pocket full of magic crystals and cocoa pebbles, sorry, I meant brilliant pebbles.

I know the answer but can’t remember it. Is this pop quiz scaled?