I'm not sure what made me think of batteries the other day as we use batteries all the time at our house. We use them in flashlights, games, toys, clocks, smoke detectors, mice, keyboards, lawnmowers, cars, the list goes on. Whatever it was I'm thankful we have batteries. Most of the time you can find a box of AA and AAA batteries on my desk ready to go. I try to get them in bulk and on sale as we use so many.