How do you store it?
She has 7000 pieces that are not part of a set, then she has 3 vehicles from the City set, the Stables from the Belleview (?) set, and is getting the Hogwarts Express and Hogwarts Castle in a few weeks, possibly Whomping Willow.
Do you keep each set in different containers? She has put the stable set in the big container with all the other pieces. But the vehicles are in those plastic take-away containers. I'd like to keep all the Harry Potter ones in their own container. But not sure if I want each individual set in its own container or just get one larger container for all of it.