Kevin Neubauer recently created CircuitBrains and wants to meet up with other electronics hobbyists in Omaha (in the USA):
https://www.meetup.com/3H-Omaha/
Did you know there are Hardware Happy Hours in many cities?
https://www.meetup.com/Seattle-Hardware-Happy-Hour-3H/
https://www.meetup.com/3HBerlin/
https://www.meetup.com/Hardware-Happy-Hour-3H-Chicago/
https://www.meetup.com/hardwarehappyhoursf/
https://www.meetup.com/Hardware-Happy-Hour-3H-Phoenix/
Chris Gammell tries to keep a list of all the 3H meetups, so feel free to ask on Twitter.