Try this:
- Take an empty laundry basket and get started in the largest room of the house.
- Throw anything that does not belong in that room in the basket.
- Move to the next room and do an exchange. Take stuff from the basket and put it in the room if it belongs there and put items in the basket from that room that do not belong there.
- Keep going like this around the house, you will find that everything DOES have a place.