Modular Japanese
Lamp-Shaped Boxes: 16

These boxes were designed by Tomoko Fuse, who calls them bowls. She provides instructions for a standard size bowl, along with 3 sizes wider/shallower than standard, and 2 sizes narrower/deeper than standard. The graduated sizes, which allow for nesting, are achieved by adjustments during the folding process, not by changing the size of the paper used.
 
Two bowls become a box when one bowl is covered by an inverted bowl of the next wider size. Tomoko also offers a lid design with a knob. These fragile boxes are not ideal for gift-giving, but they make wonderful holiday/party decorations -- just put a battery-operated tealight inside. (Never use real candles due to fire hazard.)