Here are my first attempts to render a Nebulabrot.
On the left side, there is the original version and on the right side, there is sometimes an edited version with adjusted saturation.
My personal favourite is the fourth attempt (edited).

First attempt:
Nebulabrot 1 Nebulabrot 1 Edited
Second attempt:
Nebulabrot 1
Third attempt:
Nebulabrot 1
Fourth attempt:
Nebulabrot 1 Nebulabrot 1 Edited
Fifth attempt:
Nebulabrot 1 Nebulabrot 1 Edited
Sixth attempt:
Nebulabrot 1 Nebulabrot 1 Edited