The late (and quirky) Julian Simon wrote on this topic, and on the related notion of ostensibly limited resources. Worth checking out if you are not already familiar with his viewpoint:
The Ultimate Resource, 1981, Princeton University Press, ISBN 069109389X.
That kit was a key part of my engineering education. Yes, low voltage, but that didn't stop me from hooking my own wire from the meter to an electrical outlet. In a snap and a flash, I learned about max ratings on circuit components. I loved that kit.
In the comments section of the original article, the attacker (Phikshun) notes that he worked at the same company as his victim, so he was able to test the phish on himself to make sure it passed through that company's email security.