Old socks or new, my Wife wouldn't be happy. She has a thing about keeping clothes clean. Sure a lot stems from growing up without much money and having to keep her stuff in good shape as there wasn't money to replace it.

And it's still fun for the kids...but heck a cardboard box and some markers and they are entertained for hours. We have a space ship, a dog house, a castle, and one I have no idea what is right now. It's fun when they get to be creative.