Not a fridge, but a useful cooler
A zeer pot is best understood as an evaporative cooler. It can help demonstrate how food storage can be supported by passive cooling, especially when used in the shade with airflow.
Good for learning and resilience
The value is partly practical and partly educational: it shows how material choice, water, air movement, and heat transfer all come together in a simple object.
What you add
The kit includes the matching terracotta pots, lid, and guide. You add sand and water so the build stays easy to ship and simple to assemble at home.