https://www.instructables.com/Electric-Cigar-Box-guitar-w-Built-in-amplifier/
Electric Cigar-Box Guitar W/ Built in Amplifier: I was tired of carrying around heavy guitars and amplifiers whenever I went on holiday or camping and needed...
cigar box guitarbuilt inelectricwamplifier
https://www.guitarworld.com/features/cigar-box-how-build-beer-can-microphone
So you've built a cigar box guitar, eh? Want to add some vocals while you rock the box? Then let's build a beer can mic. I've built several of these, and they...
cigar boxhow tobeer canbuildmicrophone