Crystal ball

Crystal balls are magic objects in The Sims: Livin' Large and The Sims 3 Store that cryptically tell the future. Just like with chess tables, a crystal ball table requires two chairs to be place on its both ends.

Madame Blahbatfry Crystal Ball
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.

Soothsayer's Crystal Ball
The Soothsayer's Crystal Ball can be purchased from The Sims 3 Store. Teens through elders can use it to tell either their own or another Sim's fortune.

Sims can also tell bogus fortunes to others. Evil, grumpy and mean Sims get a fun boost from telling bogus fortunes. If a Sim is caught lying, their relationship with the other Sim will decrease.