Oh man! Things like this drive us crazy. Wouldn't you like to build, then pack the designer's lunch box? Make it a can of Spaghettios and the can opener is built into the lunch box. He'll discover that the can will only fit the opener if the box top is removed. To remove the top you have to have a tamper proof #3.7 Torx wrench but once you get the wrench he finds the top blocks it from full rotation. The 12 hinge bolts must be turned 1/32" at a time, removing and replacing the wrench each time. Ahhh, now that the top is off the box when he goes to use the opener he sees you need a special tool for opening Spaghettios. Oh look, on the can it mentions you get a free tool inside every can!