Comment by skeeter2020

I have no interest in starting a club, but what I do (and you can too) is open your activity to others, (a) for easy access, and (b) with no strings. Typically all this means is reaching out to a small group to say "hey I'm planning to do <x>; want to come?". Encourage them to pass on your invite, don't take it personally if nobody comes (or even responds) and when they do bond over you shared love of <x>. Maybe this grows into a club, or just a shared message group, but regardless you still get to do what you wanted to in the first place.