I keep the boxes for Apple gadgets because it is nicer to pass on to whomever “inherits” it when I upgrade. It is neat to pack up in the retail box and hand over, as opposed to just the item itself
I keep my apple boxes. They are expensive items and if and when I sell the item as part of upgrading to a newer item, I sell the item with the original box. It increases the overall value.
As a collecter, I always keep the boxes/packaging, if possible. Even if I trade it in, later down the line I can buy another just like it and put it back in the box for my collection.