I was inspired to try and make a modular decorative wall light based on some I've seen, so I ordered some magnetic connectors, fired up Freecad to design an enclosure, and got to work.

It's a lot easier project than I expected, and if you want to give it a try, here is the stuff I used to make this project:

The STL files:

The magnetic connectors:

ESP-01 RGB module:

And the code I used: https://github.com/kitesurfer1404/WS2812FX/tree/master

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This isn't the only way to do it.