Essentially assimilating as much knowledge as I can. For now I'm starting out with a double major in chemistry and computer science for undergrad.
With this, I spend a lot of my spare time in my favorite hobby of basement mad sciencing (just go with the new word). I play with interfacing lab instruments with the computer. I've been given access to a lab at school where I do essentially the same thing.
Cooking is also a fun hobby. My gustatory sense is very strong, so I eat too much.