I posted something similar to this before, but my idea for it has changed a bit. Previously, I did not insist that participants are in some sense actively engaged in design work, whether professionally or otherwise. Now I want to help form a group (in Santa Fe) of folks who are actual designers -- whether of products, objects, architecture, gardens, furniture, or whatever. What we do together is to have coffee or tea and talk, and then (typically) we take a walk together and look at designed things and have informal dialogue or conversation around particular designs we are observing. The point is to learn and grow as designers through thinking and talking about design. It would be a very informal and casual gathering each time, and no one is in charge, though I may take a lead role from time to time for the sake of coherence.
For what it is worth, I am a solar thermal technology designer presently, but not an engineer. I engage with engineers and engineering... and folks good with math and scientific calculators. But I'm basically a design theorist becoming an actual designer. Long story. I'm also an artist and a poet and a philosopher, so I'm a feeling-sensing type, not just a tech nerd.