I’m going to start a business where I’ll buy guys’ old T-shirts from married women who are doing spring cleaning, then sell them back for more to their husbands who will certainly want them back.  🙂

I think it would do well, because women typically want to throw away men’s old T-shirts and sports jerseys, even if they have sentimental value or are fine for wearing around the house or while working out or mowing the yard.  So you could buy them for cheap, or even get the women to donate them to you.  Then the guys would be willing to pay something to get them back.