This is a hexagon wall light. It can be designed individually as the individual hexagons are plugged together with a connector.
An ordinary LED strip can be used as a light source. Very nice projects can also be implemented with WLED. You can enter WLED as a keyword on YouTube.
Here you can find an example (The video is not in front of me and only serves as an example)
https://www.youtube.com/watch?v=vuUvfX1_Klk&t=16s
If someone prints it, I would be happy to see photos of your projects in the comments