it has higher priority level than the stuff that you linked.
anyway i am glad that apparently you consider them interesting circuits.
by the way, here the counter part to the small flashlight you embedded in the thread. So i am indeed the one who created these circuits.
and i am a great fan of flashlights, when i was younger, i used CD4017 ICs.
**broken link removed**
I remember one idea was to make a flashlight with 50 or 100 LEDs, but I never realized that potential. I did not know microcontroller at that point of time (tough they already existed).