Going down stairs are so mainstream. Imagine sliding down from the floor to the first. Talk about fun! But, I will need stairs so I can walk up to the rooms. But, an indoor slide is good when coming down.
Use washi tape to accent a plain bookshelf for a temporary and changeable doll house. like building a fort rather than buying a playhouse. (Shown from ikea, STUVA storage combination with doors used as a doll’s house)