Build a pocket theremin on the cheap | Popular Science
MicroKits Theremin Electronics Kit | Educational Electronic Music STEAM/STEM Kits for Kids or Adults | No Tools Needed Easy to Build Breadboard Kit - Walmart.ca
Make Your Own Simple Theremin : 4 Steps (with Pictures) - Instructables
Theremin in the Press: Instrument remediation and code-instrument transduction | Organised Sound | Cambridge Core
Building a Tube-Powered Theremin
Finally, A Modern Theremin | Hackaday
A "Tube-Theremin" | Elektor Magazine
Building a Tube-Powered Theremin
Theremin World - A New Theremin Kit Anyone Can Build
Theremin World - Schematics
Open.Theremin V3 Build Instructions
Analog Discovery– Building a Theremin with a Soda Can! – Digilent Blog