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 do 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 frequently, making it almost completely useless and only fit for decoration or sales in Sim owned stores, if frequent visits are made to the Witch Doctor for new supplies.

Nonetheless, if a Sim wants the doll anyway despite all the pitfalls, they can acquire one from the witch doctor after repairing all of his broken appliances. This only relies on the Sim's mechanical skill to succeed. The witch doctor will lie in his hammock after being greeted, forever lying there until all of the appliances are repaired, and upon successful completion, he will will give the Sim the doll as a gift, however, he cancels the interaction frequently if the Sim is still busy and won't accept it, making it sometimes inconvenient to receive it as he'll only do it once per visit.

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

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

Warm up: If season is installed, the victim's temperature critically rise up.

Romance: Makes the victim fall in love with you, automatically queues up the makeout action.

Friendship: makes the victim your friend

Saturate: Drastically reduce the bladder motives

Stinkify: Drastically reduce the hygiene motives

Shake Up: Reduce the comfort motive and may cause the victim to puke

Agitate: Drastically reduce the comfort motives.