Seven twisted box designs, identical in height and general size, differ only in how many sides: 3, 4, 5, 6, 7, 8, 9. They make perfect little gift boxes (match the birthday to the number of sides!) or you can enlarge them to make a bizarre storage system. Each box file includes a tight-fitting lid. As the number of sides increase the boxes get less dramatic because the edges become nearly circular.

The photo shows five of the seven boxes. I skipped 8-sides and 9-sides because by now you get the idea.

All are printed in PETG.

I used Rhino 3D and Grasshopper to design and generate the files.