Almost all of us - probably when we were a little younger - went through a phase of buying clothes that had our favorite band's logo or album cover on it. If you went to see the band on tour, you might even have got an official tour t-shirt from a stall outside the concert. When we got older and it was no longer 'cool' to go outside wearing a band t-shirt, they were likely either thrown out or buried at the bottom of a drawer. You might even dig them out occasionally to where when you're cleaning or painting the house!
If you do that, stop it at once. You might damage something worth thousands of dollars. Original band t-shirts - not the 'modern' replacement types found in high street stores and worn by people who've never heard of the band - could be worth thousands of dollars. The record for a band t-shirt on eBay is $7,000, although it was a special one given to people who worked on Nirvana's 'In Utero' tour and was never sold in stores.