Party Trick!

You're hanging with friends, probably late night, and you want to get some music going. Just something for the background. No speaker set-up is available. Try this: take your smartphone [works best with an iPhone 4 or something with decent output] and put it in an empty (preferably) red wine glass. The shape of the glass amplifies the acoustics, boosting the volume on whatever comes out of the phone. A stemmed glass is better because it puts the speakers in the air as well, carrying the sound a little more. Way better than schleppin' that ghetto blaster around on your shoulder like Tron.