He is in the audience for the summoning of Yog-Soggoth (whether that's intentional or oversight is another matter.)
Anyways, I figured (edit: like Ginny, I just realized) it was stolen from Sameth and Maximus by Jurgen whom fenced it to Kringle for unspecified reasons before being stolen back by Jurgen before being taken by Baby Amelia. The Moles are never involved nor are the Elves involved in the theft of the toybox, and all of it happens prior to the Player (I guess technically Sam & Max) being active.
Oooo...I just realized the player's playing the player. Nice...