I used it to enter my school's science fair where I wrote a program that was a couple thousand lines to calculate, chart, and explore the relationship between musical notes and frequencies. I didn't have a thesis or anything, just did a bunch of programming, and the judges did not care for it haha. At the time, I didn't even realize it was "programming" a computer, it was just fun!

Once I started to learn to program for real, I thought it was weird that I had to type all the characters myself rather than selecting from a list of pre-defined functions!