Unique transporters, these items are used in pairs for traveling instantly from one place to another. Both the tubs and tin cans share a transdimentional space. If a person enters one of the tubs, he actually occupies both tubs at the same time, even though the two tubs are in different locations. The only catch is that the person can't get out of the second destination tub himself- someone had to be near the tub to pull him out or he remains in the first tub. The tin cans work the same way and can be used to transport small objects.