I have a wireless mouse at work that eats two AA batteries a month, give or take. They make rechargeable mice, but it seems like everything has a cradle or charger or something attached to it all the time, and this is no different.

Okay, so here’s your million-dollar idea for the day: Use induction to charge your mouse.

Now, I’m the first to admit that I’m no electrical engineer, and I’m probably talking through my ass right now, but I remember my physics 101

• if you run a magnet along a wire, you get electrical current. Well, you’re constantly moving your mouse around, right? What if you could apply some sort of power source to the mouse pad to speed things up a little and recharge your wireless mouse through induction? You need a mouse pad anyway, so there’s no separate special charger or anything; just plug in the mouse pad and use the mouse - no need to recharge.

When you become a billionaire off that one, kick a million my way.