Hi Martin,
Thanks for your answer; it has motivated me to learn how to use Geometry Nodes. I will check them out.
I always assign an emission shader to a light source but never thought about replacing the area light.
Your reply makes me want to experiment more with using mesh + emission shader for cases like this. Maybe it can work as well.
I will keep testing, and if I find a solution, I’ll let you know.
By the way, I only use Cycles, so it is fine if this won’t work in EEVEE.
Thanks again.