I like this idea, but I think the "step" shelves need some more support. Garage shelving idea: the lower shelves actually glide out so you can step to reach top shelved items. Then they slide back to the wall.
How cool is the Tree Bookcase by Roberto Corazza? This single-cast plastic bookcase is open on both sides allowing it to be attached to a wall or standing freely, leaving access to the books stored on the "branches" of the tree.
The best DIY projects & DIY ideas and tutorials: sewing, paper craft, DIY. Best DIY Furniture & Shelf Ideas 2017 / 2018 How wonderful is this bookshelf? I imagine it would be perfect for storing TA books and/or crafting supplies.