DIY Lego table using Ikea Trofast storage system. On the top get a piece of wood or something for students to write on and then turn over to use Lego table. Then in the bottom put Legos in one, paper in other, crayons, etc.
Tree book shelves -- great for kids room. Enticement to read. I'd like to see it made with darker wood or painted a rich brown color and placed in a living room. Also, this is full like a summer tree, I'd keep it more like late autumn with fewer displays.