I was doing a conceptual art project, getting a thousand random people to write in my book. One of them was the balloon busking guy who regularly works in Chester. The idea was infectious. I bought a kit from the local craft shop that day, and was back for more balloons in a couple of days. A week later I had filled my house with balloons, had 7 or 8 reasonably reliable single balloon models, and discovered wholesale balloon supplies and proper quality balloons.

Within 2 weeks I had made my own clown costume and began busking.

I still haven't completed the conceptual art project.

Looks like you have well and truly caught the bug