History of Japanese paper crafts date all the way back to the Edo period in the 1800s. Combined with unique design and modern box folding techniques, a single sheet of paper transforms into monsters without a need of tape, glue, or even scissors! After assembly, its belly can conveniently store a piece of candy or anything of that size. It can also hold the included mini message card with its mouth or with its hands in certain models. PLEASE NOTE! The finished size of these little monsters is approximately 2 x 2 x 1.5 inches.