We leant someone a piece of equipment worth about £150. One of those things that you don’t need to use often so is a pain to buy, but is certainly worth having. They finished using it ages ago but have had it for months and it has taken 3 requests to get it back. A time for it to be returned has now been rearranged with the comment that they would have brought it back if it was urgent. What about returning something because it’s good manners to return something that’s not yours?