Prototype Pill Dispenser
In 1962, Illinois engineer David P. Wagner made a prototype pill dispenser, three round plastic plates held by a snap fastener. It was the first to organize a monthly pill supply into daily doses.

The bottom plate has the day-of-the-week pattern. The middle plate holds twenty wooden "pills" and rotates to match the day pill taking begins. A single hole in the top plate moves over the pill to dispense it, revealing the day of the week as a reminder that the pill was taken.