Box of Tomatoes from La Tomatina

Box of Tomatoes from La Tomatina
Origin	La Tomatina Festival
Type	Box of tomatoes
Effects	Tomatoes will seek out anyone within range to pelt them.
Downsides	See effects
Activation	Opening the box
Collected by	Warehouse 13 agents
Section	Food Aisle
[Source]

Summary

This box of preserved tomatoes comes from a festival called La Tomatina, which is held in the Valencian town of Buñol every year. It consists of people throwing tomatoes all over the place. When opened, the tomatoes start flinging themselves at other people. They will not stop until they have hit a target. The only way to stop the artifact is to always keep the box closed with a lock.