CD40106BE Inverter, Schmitt Trigger, CD40106, 1 Input, 3V to 18V, DIP-14

Excellent quick service

A small test used a resistor/capacitor to feed one trigger so its output to LED blinked at the Schmitt levels. That fed into a second trigger(inverted) whose output alternated with the first. A more controllable blinker than using a twin transistor astable. With 6 gates, I feel a light show coming on.