When necessary remove mirrors from dressers or walls and pack them. Place them upright against a wall out of the way so that they don’t get broken. Remove air conditioners from windows.
Disassemble items that need to be taken apart and carefully save any hardware involved. Sometimes lost hardware is virtually impossible to replace. Put hardware in a baggie and if it goes with a desk or dresser; tape it inside the drawer where it can be found later. If it goes with a bed, tie the baggie to the bed rails.