In an attempt to make something out of what seems a neverending and unwanted supply, I have found two primary ways to re-use them.
Dusting. After numerous washings, the soft cotton is perfect for applying Pledge, oil, or polish.
Applying stain. For the same reasons, the cotton will have very little lint, so applying stain is easy. You can do the same with old socks.
There are many other uses for old t-shirts (see here, here, and here for examples), but the next one I think I might want to try is making a few braided headbands or bracelets. Maybe not for the dingy white ones (they’re still great for rags, but maybe not my hair), but I have a drawer full of old shirts I’d like to get rid of.
What kind of repurposing projects have you been working on?