Just had to reply quickly . . . our couches are getting scratched up and very dirty . . . I "reupholstered" two weeks ago with six flat single sheets, at the low, low price of $2.96 each. Just messed around with wrapping the cushions in them and draping them; one on each cushion and around that side of the arm, one across the back cushions (three sheets per couch; for fun, the cushions on one are blue and the back is yellow; reversed on the other couch). All tucked in good where possible and anchored with upholstery pins where able. Not perfect, but very cute and inexpensive!
Since the family likes it, when I have time I'm going to turn the couches over and nail the sheets into the bottom, and perhaps on inconspicuous places on the top, too to make it more permanent. The great thing is, I can take the sheets off to wash them when they get too much hair on them.
P.S. Hi mystery, snugs, ohioWfan, Dr. DEb, and everyone else!
That gives me hope. I should experiment. Thanks for the incentive!