Before he left, I went around and gathered and hid all his knives. I got
his boot knife, his assassin creed shoot from the wrist knife, his leatherman, his utility knife, his sword, his machete, his bowie knife, his broadsword, and his hatchet. Other than his leatherman and utility knife, he made them all himself.

But I think I still missed his belt-buckle knife. I figured that would be okay, since he was around girls, he would be unlikely to pull that knife out because his pants would fall down.