I love the look and sound of Big Joe Williams‘ guitars. He took a regular 6-string guitar with a raised pick guard, doubled the first, second, and fourth strings (like on a 12-string guitar or a mandolin), and then added a pickup and tone pot. With duct tape and paperclips, it seems. He would apparently play these guitars through amps jerry-rigged with pie tins and beer cans.
Here he playing his most famous song, Baby Please Don’t Go, which has now become a blues standard:
(The original video I had linked here of a live performance has been removed. Here are versions from 1935 and 1941 instead.)