Never ever toss out a cotton shirt~~~ At least I don't.
There is approximately a yard of fabric in a man's shirt.

They work up nicely in a scrappy quilt, crazy quilting, paper piecing.......

If you are using silk ties, stabilize them first. I learned the hard way after working on my SOL's ties for a Dresden plate. Used one of his sports coats for the center circle, inner border and quarter circles.

Bonnie Hunter's video on taking apart a shirt is at https://www.youtube.com/watch?v=zS-09AYE0fM

I just finished the flimsy for my DGD's quilt. She wants big random plaids so I recycled men's shirts. I came up with my own pattern, a variation of stack and whack... not the kaleidoscope kind.