I found this today while looking for shops accepting Lightning in Japan.
This was happening in Tōkyō, Jiyūgaoka in 2024 April, 28th. I was not aware of that so I missed it.
I share it in case anyone is interested.
Apparently there were people selling chocolate, coffee, service of accupuncture for the eyes, hand-made soaps, etc.
I felt it looks like a nice initiative, and didn't find a topic on that, so I post it here.
They use Discord apparently but the invitation didn't work anymore so I guess not for now.
The reference website is here:
https://diamondhands.connpass.com/event/316233/
I will write again on Stacker News when the date of the next market is fixed in case anyone is interested.