I agree about a throw blanket drapes over the back of a chair. It adds texture and really covers up anything! Fold your blankets over the back of a chair, or horizontally across the back of a sofa. There are a ton of slip cover options too, if you’re trying to just change the look of your sofa entirely.
Sure Fit is a sofa slip cover company that makes their products to fit around different sized pieces of furniture, so you can find something that will work!
I would suggest to try a throw blanket on a chair and one lumbar pillow on the couch, and I bet your husband won’t even notice!