Binary Clock
The binary clock is a popular project where binary numbers are used to display the digits of a clock.
This kit just needs a Pico and a short segment of an LED strip - about 20 pixels.
We can create a very simple binary clock using a single NeoPixel LED strip with just 12 pixels.
MicroSim
You can see a simulation of the clock here:
Note that you can click the "Show Text Time" and "Show Values" to get a decoded human-understandable view of how to tell time with the clock.