I made this in 2012 as a junior in highschool. I was inspired by a class project I learned about while visiting Carnegie Mellon. The concept here is to use an RFID chip, Arduino, and mp3 shield, to recreate the ritual experience of a turnable. This project was well outside of my comfort zone at time. Solving all these problems was the most fun I've ever had.
The most valuable technique I learned in this process was how to handle a roadblock. Instead of stopping to wait until I could figure out a solution, I would roll doge the problem by working on another aspect of the project. By letting that challenge percolate in the back of my head for a couple hours, or overnight, I would usually come up with a solution by time I came back to it.