I haven't done many. [Here is
one example; content warning!]
However, they are really fun and interesting to do, almost like writing magnet poetry.
Some of my favorites are actually from a dear artist friend of mine who passed away. I don't think I will be able to find any pictures to share, but hers were amazing! They were often mixed into the backgrounds of dioramas or paintings.
At one point in time, she also had a beautiful one in her home that was made by another artist out of things that he fished out of the sea (e.g.: old floppy disks, rope, etc.). It was huge and heavy though! One time it fell off of the wall and nearly destroyed her computer monitor.