That's what each of us has, so it's a bunch of old T-shirts. Always shift them from from place to place, and the hand turns to throw away. So, I have a couple of ideas that you can do with such t-shirts ....
The first idea:
Just cut the squares more, sizes from more to a smaller, and collect on a strong thread
Idea number two
And here it will take adhesive fliesline or can be a food film to firmly attach parts to the base