I carry my home on my back, in a backpack, along with my laptop computer, mobile phone, mobile tablet and mobile mouse. Sometimes the backpack gets a little heavy, so I stop to recharge my laptop computer and the mobile phone and mobile tablet. At one time, when all mobiles were cuffed to the wall, I counted three continents and seven states and twenty-one different main doors and they all were home. But only the mouse was really free and happy there. Because, after all, all he needs is just to replace a battery.