Here is what I pulled out of my painting supplies:
Here it is in progress with a couple of coats of gesso:
And here is the final painted piece.
I like the way it turned out. If you look really closely, you can still see some of the original background. But it turned an ugly piece into something that I can use in my challenge project.
I hope you try to re-purpose textiles instead of tossing them out next time.