Pet Crate

Pet Crates are a distributor item, meaning that when put in the workshop, it will give various items. They will give various pets, some of which are rare and valuable.; This makes them very valuable, almost as much as Soul Keepers

Acquisition
Pet Crates are a random drop in the Item Game, and can be picked up there.

Uses
Pet Crates, just like Soul Keepers, are used as a form of "currency" in the item game. Also, they have a chance to drop rare items.