Having a full-fledged office at home should help your husband feel like it was simply downsizing, which it sounds like it is. Saving money by closing a commercial office but having a functional one at home, where he can work. I would be lost without my office at home, and I have an employers office I go to as well.

Things I have a difficult time letting go of are bookshelves and dressers. They do so many things, and can be repurposed. But there are some small shelf things at my house that haven't done anything useful for years, no matter how I think about using them, and they probably should go.