I bought a t-mobile g1 the first android phone. At the time my school's wifi needed you to log in every time you joined the network. I wrote an app that logged you in automatically. Solved a need I had, I then put in in the app store for $0.99 and sold a few hundred.

I went to a small company career fair for the free lunch. When they saw I had an app in the app store, I had immediate interest and got an internship.