This isn't exactly astronomy related like Niel deGrass Tyson's stuff, but when I was a kid I got an electronics set, complete with a bread-board, several LED's, a rheostat, heaps and heaps of resistors and capacitors, and several other things having to do with digital and analog circuitry. That was one of the best Christmas presents I ever got, and still from time to time wish I had it to pull out and tinker with. I remember one time I probably could have burned the house down had I not smelled the melting plastic on the set. What happened was that I had learned at school how to make an electromagnet out of a battery, a coil of wire, and a nail. Well, I did the same thing with the set when I got home, but then left it on for about an hour. As you well may know, connecting the two terminals of a battery without any resistor can cause the batteries to overheat, and most likely rupture. I think I probably caught the thing just before the batteries broke, because they were very hot. Anyway, I'm rambling, but you get the idea: I learned to love tinkering with electronics as a kid, and now am majoring in Computer Science.