I love projects like this. I wish I had the desire to just do something cool, whether or not its useful or utilitarian. Accomplishment strictly for the sake of accomplishment is pretty admirable.
I agree it doesn't have to be utilitarian to be admirable. That's called art. But you seem to be saying it's particularly admirable because it's for its own sake? That is a weird POV to me.
That's what I'm saying. I wouldn't call this art, and it certainly has no point, at least not a utilitarian one. You wouldn't make money, and it probably wouldn't even be that fun to play. It's just cool.
It's mastery. Doing something because it's a challenge you find interesting, not because there's something external to be gained. It's pretty zen, really.
You have a very low bar for calling something "zen". I'm good at flipping bottles of mustard and such behind my back without dropping them. No point really, just fun. Zen?