A cooling supply unit aboard the Halcyon
A cooling supply unit was a device employed for the purpose of chilling items, such as foodstuff. The Corellian MPO-1400 Purgill-class star cruiser called the Halcyon featured cooling supply units within its passenger cabins, available for use by those aboard.
Within the context of the Star Wars universe, the term "cooling supply unit" refers to what are actually mini-fridges in the Star Wars: Galactic Starcruiser experience located at the Walt Disney World Resort.