What is the Silliest Accessory You Have Ever Seen.

The silliest assessorie that comes to my mind is the LP spindle hole enlarged. What, doesn't anybody own a pocket knife anymore? Enjoy the music

I heard PWB demos back in the 80s. They work. Except, they don't. Your brain processes inputs with more quality the second time. Try reading a page from a book you've never read. Twice. So the con is to play music without the tweak and then with the tweak. After that, it's psychological. 

Some guy makes a parabolic-style reflector from thin laths of wood. It sits behind the speakers. It works much like cupping your ears. Not bad until you hear the price. $30,000+.

Got to admit the worst is the GeoffK phone call. At least it was only $60.

With sincere apologies to OP for going off topic.

@millercarbon From Wikipedia, Snowflake is a 2010s derogatory slang term for a person, implying that they have an inflated sense of uniqueness, an unwarranted sense of entitlement, or are overly-emotional, easily offended, and unable to deal with opposing opinions.

Snowflake is especially used by hard learning politically right people to denigrate liberal people .

Ironically Albert Einstein would today be called a snowflake by those disagreeing with his liberal politics.