Do you have a hobby that's orthogonal to your tech career? I try to go to photowalks and photo meetups as much as I can. I end up meeting a more diverse set of people and because I'm a "techie" they'll often open up about their tech problems. Giving a few suggestions for free then provides an opportunity to ask them about how they could improve the automation in their lives.

Another option is owning a house, or taking some interest in the various maintenance folks that run an apartment building. You encounter lots of people with no systems, but not enough knowledge/time to get something working on their own. Or, even better, those that have been burned with custom shitty software. I had to get a tree trimmed and the arborist was a goldmine of information on the software available, and the problems his company had with it. Markets like these are ripe for disruption with simpler and cheaper SaaS solutions.