I made one a few years ago, my daughter needed to make something that would play any kind of music. The teachers suggestions was thing's like a oat mill box drum. Well I was wanting to build a cigar box guitar for a long time, just needed a reason (can't play at all, but was intrigued by the instrument ever since I heard a guy play one at a get together. I couldn't believe the music that came from that cobbled up guitar. So off to t he shop we went, got some plans and some parts on line and made a fine one, like I said I can't play at all but a friend of mine plays the guitar and banjo after he got done tuning it he played the best blues you ever heard. He used a metal tube on the neck to change his notes. Well I made her do most of the work, and when she took it to school with the story about how it came to be (hobos in the depression would make them and play for a meal or a place to sleep. I don't know if it's true, but it sounds good). I guess it was the talk of the school, ended up in the school newspaper and all. To this day she treasures it as much as anything she has. Will build another one some day and learn to play.
Dave