I was helping others create security devices. That’s how it was put in the dream. It was a firm, and we were working outside, in the world. My security device ended up looking like a lawnmower chassis, the sort with a little gas engine that you push and walk behind. There was no engine, handle, or wheels, just that shape, from below. Hope you get the visual from this explanation. The kicker was that it was huge, and high up in the sky.
I pointed it out to people, laughing about its lawnmower resemblance. “I didn’t realize that when I created it,” I said. Then I went on to tell them that it would perpetually filter the world against security threats, and never come down. Then they showed and told me about their security devices.
Weirdest thing about this dream is that I had three other dreams. In them, I’d look up, and there was my security lawnmower. I laugh even now remembering that.