If you run a bitcoin meetup, this is for you:
Meetup.Com backup/replacement using nostr also pulls in events on existing meetup page (external link to @Derek Ross's Plektos) https://kcbitcoiners.com/calendar
Embeded/Private @npub15guz...twuk add locations using nostr.
https://kcbitcoiners.com/shop
This is a static website hosted on s3 so even non technical folks could deploy it super easily. If anyone finds this useful, I could fork it and make a generalized version for any meetup/group. There is a simple whitelist of npubs in the code for who can add events or locations.