It's not just a Dream Bookshelf

thingiverse

Don't forget to use the provided source file, either by laser cutting multiple layers of plywood or printing it on a large paper for carving. The .dxf file might be usable for laser cutting purposes, but if you're unsure, try the .stl file for dollhouse-sized bookshelves or even full-size ones with a large printer. Additionally, you can access the inkscape and openscad files to customize your design to your heart's content.