Voodoo doll

The voodoo doll appears in The Sims: Livin' Large and as a reward for visiting a hidden lot in The Sims 2: Bon Voyage.

Bon Voyage
The doll can be used to perform rather useless activities such as making a Sim hotter or colder or making their bladder motive go down. The doll almost always fails and backfires on the user, making it almost completely useless and only fit for decoration or sale in Sim-owned stores, if frequent visits are made to the Witch Doctor for new supplies.

Nonetheless, if a Sim wants the doll despite all its pitfalls, they can acquire one from the witch doctor after repairing all of his broken appliances. As with other repairs, success depends on the Sim's mechanical skill. The witch doctor will lie in his hammock after being greeted, forever lying there until all of the appliances are repaired. Upon successful completion, he will will give the Sim the doll as a gift. However, he frequently cancels the interaction if the Sim is still busy and won't accept the doll. This can be inconvenient for a Sim trying to get the doll, as he'll only offer it once per visit.

Five voodoo dolls may be collected on the souvenir shelf. If that is done, nearby Sims will be cursed into imagining they are being attacked by a bee swarm.

The Effects
The voodoo doll could cause chaos or bring happiness. These are the things that a voodoo doll can do:

Warm up: If Seasons is installed, the victim's temperature will increase.

Cool down: If Seasons is installed, the victim's temperature will decrease.

Romance: Makes the victim fall in love with the user, and automatically queues up the "Make Out" action.

Friendship: Makes the become friends with the user.

Saturate: Drastically reduced the victim's bladder motive.

Stinkify: Drastically reduce the victim's hygiene motive

Shake Up: Reduces the victim's comfort motive, and may cause the victim to throw up.

Agitate: Drastically reduce victim's comfort motive.