I think sometimes the thought isn't finished. When making my walking machine, even though I was enamored the whole time with this specific one, I also kept thinking about a much larger one. With a burn platform on top of it. So that it would be some kind of large apocalyptic beast of burden that would walk the Earth. I kept thinking about how the legs would cast shadows in the flickering light from the fire, and the chassis would turn black and scarred from the heat of the fire...
So maybe one isn't enough. You do one, but then, feel, well, that's almost it, almost the complete thought. But not quite. And maybe they just feel like they have to make another one to get it.
And, secondly, I think some things are hard, and after you do one, you want to do another, even more ambitious one. It looks like that's the case with Bliss Dance.
But, against all of that, I sometimes feel a strong urge to move on to new ideas. I came very close a few weeks ago to leaving my mutant vehicle home, just to have more room in the trailer for other projects. And to be able to scavenge the batteries and solar panels for something new this year. I don't ever want to get too tied down to things I've done before, since it's hard to make new things if your garage is filling up with old things. But some folks contacted me, all excited about what I made last year, and I thought-- I need to bring this thing back at least once more and see if I can get it to stomp around everywhere, or at least break down in front of the DMV instead of halfway to the exit in Kidsville.