Quantity   Component name
1 × cigar box the taller it is, the fuller it will sound
1 × 34" length of 1x2 you will want a hardwood such as maple, unless you don't care if the neck bows
3 × brass grommets however many sound holes you want, basically
3 × brass eyelets to hold the strings
1 × M6 hex head bolt, 40mm long this is the nut!
1 × 8mm j-bolt, 40-50mm long, or a threaded rod this is the bridge -- if it has a head, you'll need to cut the lid so it sits flat
3 × guitar tuners
3 × guitar strings book uses low E, A, D
1 × 1/4" guitar jack
1 × 35mm piezo disk cos that's what I've got