I wanted to do a non-kit build for the first time (and wanted to go fairly primitive), so I mostly just grabbed stuff I had lying around.
The body is a small (about 8x5) cigar box I picked up for 50 cents at a yard sale, painted green, and decoupaged a poker hand onto.
The neck is a piece of wood I pulled off a garbage pile. The bridge and nut are a couple of "bats" ("one-hitter" pipes for you know what) that I bought for a different build that went bad. I used a violin type friction peg to tune the single string, which was just an old high E string I had discarded from a regular guitar when I changed strings on it.
The only power tool I used was a drill (for the sound holes, the string hole at one end of the neck, and a pilot hole for the friction peg at the head (I used an awl to get the hole right for the peg, but broke two pegs before I got it big enough for the peg to go through and small enough for it to have grip and hold tuning).
Yeah, it's rough. The neck is already splitting at the head, as the wood is old, cheap, and dried up from sitting around for years before I picked it up and said "hey, a guitar neck."
But hey, it makes noise. And I like it.