Calvin often uses cardboard boxes for his different inventions, such as the Transmogrifier and the Cerebral Enhance-O-Tron. It is thought by some that at least one box was the packaging for 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.

Cardboard boxes Edit

Inventions Edit

• Duplicator
• Time Machine
• Transmogrifier
• Cerebral Enhance-O-Tron

Add-ons Edit

• Ethicator

Others Edit

• Sales counters
• Location of emergency G.R.O.S.S. meetings
• Package for Calvin to be mailed to Australia in