Entertainment
 

Cardboard box

From The Calvin and Hobbes Wiki

Calvin often uses cardboard boxes for his different inventions, such as the Transmogrifier and the Cerebral Enhance-o-tron. It is implied that he may have gotten this box from the failed attempt at getting the Chocolate Frosted Sugar Bombs beanie. This, however, is unlikely, as the beanie box is significantly smaller than any of Calvin's inventions, and the Transmogrifier was invented before the beanie was ordered.

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[edit] Cardboard boxes

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