Box Only Plan are used by people who want to safe keep loose items that are able to fit into our Spaceship boxes. They are not allowed to store their own boxes under this plan. These people include students, people relocating to another country, and households or individuals who want to declutter their homes.
Under the General Items Plan, closet size are great for people who are looking for some extra storage space. Bomb shelter and study room plans are tailored for households that are renovating their homes, as well as companies that needs more space for work. The bedroom plan is suitable for those relocating overseas and can't decide if they will be back soon.