does pixel longcat count? this was my jam
This is the really oldschool community project that I always wish I had taken part in. The original ones were before my time here.
The first and second Cookie Monster fads were the best of all time.
I also kind of miss the 'fad' fad. That word was used to describe things so much around 2008-2010.
It has definitely fallen out of use in recent years. I blame the increasing prevalence of the word 'meme'. It replaced fad here.