Many, in the sense of "here is the problem, design and build a solution from scratch" IT engineering. I got to implement all sorts of things it would have been wiser to buy in. Joys of small nonprofits.

Several times literally: hacking home sites out of the woods for ourselves and others seems to be a habit with my family. I can think of a dozen such efforts Ive been involved in, including my house which was a half mile from power and covered in cedars when I started. (its still covered in cedars, there's just a house hidden under them now)