Feynman has many interesting stories about playing about with all sorts of stuff from picking locks to the Manhattan project. His book, "Surely you're joking, Mr. Feynman!" is just a fantastic read: https://www.amazon.com/Surely-Feynman-Adventures-Curious-Cha...
The sequel, "What Do You Care What Other People Think?": Further Adventures of a Curious Character [1] is also excellent, and includes his account of serving on the commission that investigated the Challenger disaster.