Crystal ball

Crystal balls are magic objects in The Sims: Livin' Large and The Sims 3 Store that cryptically tell the future.

The Sims: Livin' Large
The Madame Blahbatfry Crystal Ball allows the player a chance at changing a Sim's personality. If the player can figure out the message and direct the Sim to accomplish the task in the next 24 hours, the Sim will gain a point on that particular personality scale. If the task fails, though, the Sim will lose one point.

The Sims 3 Store
The Soothsayer's Crystal Ball is available in The Sims 3 Store as a premium item. It can be downloaded for 600 SimPoints.

Boule de cristal