Ask HN: How do you make people notice the cameras watching them?

We made a free, remixable postcard project about noticing the surveillance cameras that blend into everyday life, mapping where they are, and encouraging people to respond creatively to their presence through art, messages, documentation, or other interventions. We have almost no budget, and outreach to similar organizations has led nowhere. What would you try next to get more people to discover it, participate, remix it, and spread it?