This is just opposite of what I am thinking. I am doing too much of EE. I think about some application or the other in my spare time, draw mechanisms for robotics while I am doodling and while in class I follow my own curriculum as the one taught at my university it too slow. I am actually looking for a hobby which would take me away from the abstractions of EE and put me to a much concrete ground. Just cannot find any. Suggestions?