Mini fridges are amazing little appliances. Need a gift for a college student? Get that hard-working person a mini-fridge for their dorm room or economy apartment. No apartment or room? No problem. Get one that runs off batteries and can be powered by a solar collector. These pint-sized refrigerators are often standard furnishings for hotel and motel rooms, right next to the obligatory coffee maker. They are also useful as an auxiliary refrigerator for sodas and similar items in an area where busy household members might be too muddy or dirty to trudge through the main part of the house.