Entanglement shell
From Tardis Wiki, the free Doctor Who reference
Entanglement shells were devices used by climate engineers to terraform hostile planetary environments by stimulating rainfall. They could also be a by-product of some form of transdimensional energy dispersal, such as teleportation. (TV: Warriors of Kudlak)
Sarah Jane Smith kept several bottles containing entanglement shells inside her attic at 13 Bannerman Road. (TV: The Last Sontaran)
