I like the two test lamps in series, and especially that rotary commutator sign flasher.
Ooooh yes, that one's a real classic!
At my former school (graduated in September) students of the full 5 year course (technical High school, I did the 2 year college) still learn to rewind and repair small appliance motors and similar stuff. All students. teachers and so on can take their stuff there to have it fixed for free.