I helped a friend move out. They loved to buy stuff and never use it. Anyone who came over to help left with some decently priced trinkets. I left with an instant pot, sous vide wand, console table, a bag of small electronics, expensive markers and pens, and other stuff I surely forgot. I couldn't believe my good fortune and felt I had to compensate them. But they refused. We had performed an extremely valuable service just removing the items, the value of which was immaterial.