I made my own, too, mostly by taking something made by someone else and changing the code/numbers to see how it would react. I wish I could find those files again somewhere and just spend a moment immersing myself into that universe.
None of the other visualisations for WinAmp hypnotized me the way Geiss did.
Me, being an AVS guy, can only recommend https://visbot.net .
In the olden days there were:
- https://customized.org and
DA is sadly almost unusable for finding AVS presets now (as I discovered today), so you may start with this page:
for finding some of the more famous packs.