I make "Cigar Box" guitars, but I don't always use cigar boxes, just scraps of wood and whatever else is around when I need it. The builds require only a few basic tools, the players don't need much skill either.
I am purely a hobbyist. I saw a YouTube video about making a guitar using minimal tools and I thought that I could do that. I did it, and now I make my own guitars and other things inspired by YouTube. I have recently branched out into outdoor furniture and NOT "bandsaw" boxes.