SimTimes discovered the first pre-order item for The Sims 3 World Adventures:  Pile of Papyrus.  The object will be unlocked by a code given to you by Play.com after you pre-order the game (emailed the week of release).

The scroll will include “details on the journeys of long gone heroes, the histories of fallen kings, and even a grocery list or two”.

Sounds like it will make for an interesting item…hopefully those who don’t pre-order the game will be able to pick it up at a later date!