What do you just have to keep ?

YY1 said
I've got some concert shirts from the 80's.

Some of those are worth big bucks.

Quick search shows 1982 Iron Maiden NOTB jersey listed for between $600 and $2000!

I'd love to see a pick of that jersey

I used to have one from Metallica, I picked up in Switzerland
As luck would have it, I was wearing it when I crashed my dirt bike into a VW European in the early 2000s and the EMTs cut it off of me

Saw it listed a few years ago for 600