An inherited object can be valuable because selling it would require explaining too much.

Some possessions are held not for their worth but for the conversation their absence would start. Selling would mean explaining to a relative, or to yourself, why this thing turned out to be optional after all. The object stays on the shelf as a way of avoiding a discussion about loyalty, and its value becomes mostly the value of not having that discussion.

Pick one inherited thing you have never quite used and ask what letting it go would actually require you to say. Sometimes the answer is a hard conversation worth having, and sometimes it is nothing at all, only a habit of assumed obligation. Knowing which it is makes the keeping honest rather than automatic.