Spent the day with Kevin, a good friend of mine. We monkeyed around a little bit with my Spark Core and some other components. A while back, I got the parts for building out some stairway illumination, but I never did anything with it. It was great to get these parts out of the box and start messing around. First test was getting the analog output of force-sensitive flexible resistor to trigger an LED - success!
Spark core + LED.