We are already using an old afghan to cover the seat cushions for protection from her. Currently it's a scrap afghan made from leftover bits of dozens of yarns that I started in high school and finished in college.
Here's a picture taken as I worked on it, though it's in black and white so you can't see all the wild colors:
So when I decided to make another afghan for the couch, this one to cover the back cushions, of course it had to be another scrap ripple afghan. Here's a picture of some of it:
At least I'm using up some of my voluminous stash! And doing a good thing at the same time.
What do you do with your scrap yarn?