My mother started the family habit of leaving clothing and shoes for hotel maids when she traveled in Europe just after WWII. Hotel maids are always poorly paid. It was her way of helping them out a bit. Not that she left DIRTY clothes. She made sure they were tidy before she gave them away. She even gave away her coat and all but the clothes and shoes she needed to wear going home. (her last give aways when on the ship). I've done this all over the world.

Packing is an art. Most people have no talent for it!