Since I'm not sure that they would (or should) be sold again in a thrift shop, I decided to repurpose them into something new + completely wearable. The fabrics of these shirts don't really scream "men's button-up", so I decided to make them into tops for my girls.
Getting in close with these shirts made me realize what craftsmanship went into each of them. For example, there were three buttons at each adjustable cuff + darts at the back of the salmon-colored one. I'm glad each shirt was well worn + appreciated in its original form. The cotton fabrics are high quality + worth selvaging. These tops will get lots more wear now. :)
A few other ideas for giving a men's shirt a new purpose:
-child or baby's dress, top, skirt, shorts or hat
-produce or bulk or bread bags
-stuffed toy (can stuff scraps inside)
I have to say that I think the idea of making men's shirts that are showing their wear at the collar (though the collar can be turned) +/or the pits into boxer shorts for the owner seems to be a fitting progression.
In the end, (after cutting off + saving the buttons) I'm left with a few scraps of fabric that I added to my scrap fabric bag that periodically gets dropped off at Goodwill. They will send those scraps off to be recycled into things like carpet padding. This feels like a pretty successful waste reduction project. :)