Woodworking

We've got our very first beautiful crying 1.5 month monster in our house now. We went bare bones with the preparations, only getting a crib, changing table and stroller. As the toys, books, play things from family start to come in, I want to start designing and building a storage area.

I'm thinking of an interactive storage area which grows along with my little girl and her play things. Interactive in the sense that the storage skeleton itself perhaps can be moved/ expanded/ collapsible, ala a treehouse or a fort.

I've dedicated an area in my house where the piano and wine rack used to be, it's a 1.2m x 1.2m corner next to a window in the living room.

Other things that came to mind is if one edge of the storage can be a hand painted vertical height marker (instead of being on the wall)

Open to any ideas and suggestions. I'm just trying to avoid the boring plastic storage containers and stacking them up.