[bostik]

Disclaimer: my experience is limited to London scene only.

Hosting a meetup is indeed a bit of extra work (I have just read the coordination notes our HR sent out, and oh boy...).

Offering to do a talk at an established, not too large meetup should be easy. Only the biggest and best known ones can pick and choose their speakers. Everybody else has to hunt, sometimes even beg for talks. As a result, these "lesser" meetups tend to be more casual. Nobody expects a professional, conference scene level of presentation.

So as long as you find a meetup that suits your taste, offering to do a talk every now and then should be more than welcome.