Lately, my favorite source for material has been the MIT flea market which runs third Sundays through the late spring, summer and fall. It’s a great source for small parts, gears, antique tools and beautiful old electronic parts. I love the typography on these ancient capacitors and purchased a big pile.
I believe these will find their way into a piece + how can I go wrong with anything Cornell? Here’s some more stuff, excuse me now while I get to work!
According to a patent search on google, that first device is a capacitor. You could check it with a good multimeter, perhaps wire it up with some transisters to produce a simple oscillator?
OH! This is going to end well!