Kids usually get the smallest bedrooms in the house, often lacking a closet, and it is understandable. So, you have to puzzle over how to make kid’s limited
Spare closet turned into book/nook reading space. Don't know if I will ever have a spare closet for the kids, but cute idea!
Alice in Wonderland door knob.... Cute on they wall. You could paint a small door in the corner of the room.