I recently ran across this video on youtube: A bunch of musicians at a church in Atlanta downloaded musical instrument apps for iPads and put on a Christmas concert. They were written up in a Toronto newspaper, which listed a few of the apps they used in case you want to start your own instrument-less band. The set list included Carol of the Bells, Rockin around the Christmas Tree, and Feliz Navidad. Unfortunately no Pete Townsend windmill chords, or Jimmy Hendrix onstage pyres, although the drummer did put a little feeling into his playing.
The Attack Dyno brings car enthusiasts an attack timer and dynamometer in a small, portable package with the ability to output vehicle torque, speed, horsepower, 1/4 mile times, 0-60 mph acceleration times, ambient air temperature, and more.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.