Howdy from a former Somervillen (inferred from the photos)!

If you have any interest in doing custom B2C instead of B2B, there's Somerville Open Studios. I did that one year (2019) before we moved to Vermont just before things went to shit in 2020. I also noted that Somerville Open Container Day (aka Porchfest) would be a great time to have something going (a demo maybe?) at our house given the huge foot traffic. I think you'd get a lot more folks passing by rather than the folks already committed to visiting art and craft studios specifically.

Don't let your likely lousy space be a barrier. We had my furniture on display in our living room (aka: our furniture) and I gave people tours of our basement which had my bench, my table saw, and damn little else. People kind of dig it. Small and scrappy is kind of expected for these kind of events.

Good luck if you try to give a go at it from another angle! And if you stick with software, that's cool too.