The present invention, and even fantastic. The Rotel Mechanical Mobile takes the simple act of fidgeting and uses it to juice up your handset. It’s perfect really, since upon discovering that your smartphone is out of battery, you may often find your idle hands to be left agitated anyway. One model has a hole at one end, ideal for inserting your finger so you can swing the gadget around. The second has a twistable bottom which you can rotate. Both versions of the Rotel Mechanical Mobile use kinetic energy to create cellphones that are both fun and eco-friendly electronics.