I was at a friends and she had a couch that was begging for the same thing but I stopped short of offering. I get myself into too many other people's projects when I have an enormous backlog of my own!
It's not that hard. Get thrift store fabric. I just saw tons of coats that would work at the Goodwill half off sale today! Look at upholstery tutorials online. Get a cheap couch. All that will be wasted is cheap materials and a bit of time - and neither of those are really wasted if you learn something!