So, who's getting an iPad Air or an iPad mini 2 once they are released on November 1? We know that Woz isn't, but at least a third of US tablet users are intending to replace their current slate with one of Apple's two models. And as a direct result from that, Apple's cash pile isn't the only thing bound to grow. So will the number of old gadgets collecting dust around our homes. And that's not cool as any piece of used electronics, regardless of its age and working state, shouldn't be left idle. There's actually quite a lot that can be done with an old iPad, or any other used tablet, for that matter. Here's a few ideas for you to consider.