...

I have wireless headphones that I use to listen to Rockies games (plugged in to the audio out of the Direct TV box) when I can’t be in front of the TV (often). I probably actively use them 8 hours per week (baseball nut), and every once in a while, forget to turn them off until the next day. So let’s say they are powered on for 30 hours/week.

I use 2 AA Rayovacs, and the batteries last for 2-3 months. That’s crazy good value for me.

The headphones also allow me to eavesdrop on phone conversations in the neighborhood. This annoys the crap out of me, since it causes interference with the game I’m trying to listen to :) There was some juicy gossip about a funeral the other day, though …