I can remember butter and milk standing in a saucer or bowl of water in the pantry covered with a teacloth with its edges in the water so it stayed damp and the water evaporation kept the butter or milk cool.
Many years ago my parents had caravan for holidays and that had a fridge that worked purely on water evaporation. It looked like a block of plaster about 18 inches -2 ft cube, which encased a small metal cupboard about a foot cube. In the top of the plaster was a shallow dip, which you poured water into and it permeated through the plaster, evaporated and kept the contents of the box remarkably cool.
Later when I had what was, laughingly called, a 'studio flat',(one room with kitchenette and shared bathroom), the kitchenetts had no fridge and the caravan fridge was excavated from a corner of the garage and sat under the sink in my kitchen. It was very effective, especially in hot weather.