I’m thinking something like vintage computing, Linux/BSD, makers. Not limited to those, but not things that are more fandom focused like comic con or anime. Maybe video games, if it’s more indie, less corporate. No shade intended for fandoms. I’ve done a few comic cons and what I’ve learned is it’s not that enjoyable for me.
I live in one of the four corners states. But it doesn’t necessarily have to be in a Western US state. It’s more about travel costs. Like it’d probably cost me about the same to go somewhere in the midwest as it would to Los Angeles. More expensive flight (but still fairly cheap) but lower costs for food and lodging. East coast or Mexico/Canada are probably out of the question, those flight costs are a bit too high for me to justify.
Some context: I did Vintage Computer Festival Southwest (VCFSW) last year, and I really enjoyed it. Going again this year. And I would love to find some others with similar vibes, but don’t know where to look. I found a handful of different searchable convention lists and searched for VCFSW on each of them as a litmus test, which they all failed.
If you’re wanting more than just the weekend event once or twice per year, you could look into the Society of Creative Anachronism. Events tend to be smaller (100-300) but there’s also some larger events. Door price is fairly cheap and most of the activities are free to participate in.
There is a catch though, it’s a fairly dedicated hobby organization. Everyone attending is required to attempt pre-16th century clothing. Also, some activities like fighting require certification.
I know some folks in the SCA. Which I had no idea stood for “Society of Creative Anachronism” until just now. It’s a bit too much for me, but I’m glad they exist.