Looks amazing! Reminds me of a funny reddit thread about a man who built a fiber optic star ceiling for his daughter. The top comment was "First child?". :)
https://www.reddit.com/r/DIY/comments/8g8pce/fiberoptic_star...
Don't assume: Could be an only child, or the spouse is stay-at-home, or the author has family wealth and doesn't need a full time job.
And then the things you do to redeem your guilt for the second child is a whole interesting area.