Last year in February, I cut up a couple of my old t-shirts and made them into a rug for the bathroom. As an experiment it was okay, but there were a few things I wasn't 100% happy with, so now for T-Shirt Rug No.2.
I totally love the result (even if this one is ALSO not laying 100% flat). It's a bit more ... squishy than the first rug and it feels really good on my feet when I get out of the shower.
I've still got a couple of t-shirts I've already have cut up, so I guess I'll make a second one, maybe for the bedroom.