Rome’s Coin-Operated Holy Water Dispenser
Drop a coin in, and holy water pours into your hand—2000 years before vending machines.

Jacques Louis David — "The Death of Socrates" (1787), public domain
Insert Coin, Receive Blessing
A thirsty hand drops a coin into a bronze slot. Suddenly, a trickle of holy water splashes into the palm. This is ancient Rome’s answer to the vending machine—no snacks, just sacred liquid.
How It Worked: Hero’s Device
Hero of Alexandria describes a temple gadget: coin drops on a pan, pan tilts, a lever lifts a plug, and out flows a cup’s worth of holy water. The pan resets when the coin slides off—machine resets for the next user.
Long before modern vending, Roman temples sometimes featured ingenious machines: you’d insert a bronze coin into a slot, and a measured splash of sacred water would trickle from a spout. The device, described by Hero of Alexandria, used a simple lever and weight system—no magic, just clever engineering.