I just starting collecting interesting 2 seat convertible cars (2 or 3 years ago - and on a low income budget)... But I also, on occasion, build, and fly radio controlled aircraft, radio controlled monster trucks, build the odd mechanical thing to do some obcsure job that I'd rather not do... I also woodwork (quite good at it actually, and I prefer the more advanced stuff like inlaying, and scrollwork). I am interested in, and have built Tesla coils, electromagnetic devices, High voltage antigravity machines (yes they exist), nuclear technologies, Lasers, Masers, and a whole miriad of other off the wall technologies that can be explored in a home lab type of environment. But I'm very cash limited, so I usualy learn what I can, and then move on to the next study.