Do you wear your concert t-shirts?

[Sahara]

I have a box full of shirts I've bought at concerts that I never wear, except to more concerts! I'd love to wear them every day but feel like I have to save them, because I can't get another if they get worn out. But what on earth am I saving them for...? What good are they doing hidden away in a box?

So, what do you do with your concert shirts?