A few old things
A few newer things
FM crystal radio schema
A slow rate LED flasher that draws its power from two rods of material, graphite and magnesium, which form a crude battery when held in the hand, with skin and living tissues providing the electrolyte.
"DX" BCB XTAL set
Electromechanical Amplifier with carbon contacts. Also features magnetic damping and pressure control via a steel reed in addition to the H.P. Friedrichs style balance beam.
Last incarnation of the "good" xtal set, now those coils live in an even better setup
mood lighting, freshly baked at home. Reclaimed wood, vintage porcelain and bakelite, borosilicate lamp shield.
Finely adjustable carbon-carbon arc gap
A magnetic vortex generator, aka, Tesla's Egg of Columbus
