Reach out here: https://dallasmakerspace.org/faq/ (I'm not finding a good link for https://thelab.ms/ - another Dallas makerspace), but I'd suggest reaching out.

...generally I've seen weekly/monthly "fix-it" workshops as a kindof open-house / membership drive.

Probably best to 1) have people sign safety waivers, especially if they're not members 2) have people sign a "we can offer to help you try, but your widget might end up worse than before" waiver 3) run it as a volunteer outreach event with a focus on getting membership rather than a transactional "fix my ____ for free" outcome