Kikkerland 3-Way Headphone Splitter
A little plastic doodad that hooks into a typical 3.5mm stereo-mini jack and splits the audio between three sets of headphones.
Mileage Log+ for iPhone
My wife runs her own dance school, which often requires us to leave town for competitions and performances. On those trips, we track our mileage and travel expenses for tax purposes. Nothing a simple notepad can't handle, but I am a nerd so I enjoy the extra bells and whistles of an app like Mileage Log+ for iPhone. Made by the same…