Each person in my family has one of these to match their laptop cases.  Great not only for the laptop power cord and mouse, but we also use them for iPod/iPhone cords.  Keeps us organized and we always know where our cords are when on the road. Might also not be a bad idea for the kids to use these at home for their always-missing iPhone chargers.  Yeah, you could use something else to carry these cords, but do you?