Just finished Jasper,my first build fueled by an interest in luthiering that began while researching Fallen Fret, my novel of the blues. A subsequent viewing of the cigar box movie led to my determined effort to build a CBG. Used my long-dormant finish carpentry experience with a few curse words I finally put the strings on yesterday and savored the first twangs.
I built the neck from a spare bottom stair rail. Fretboard came from a planed-down dresser drawer; I'd noticed the quartersawn oak front panel when loading it for the dump and kept it for 15 years. Wide drawer pull from the same bureau works fine as a bridge. Added a plate found on a junk steam engine to the top. Chrome saddle came from an old meat skewer.
Overall, a fine experience greatly aided by Cigar Box Nation and C.B. Gitty supplies (frets and sweet-sounding Southbound strings) Next build, a 6 string electric.