#1Motion tracker mouse:
Use motion sensors that track hand movements of the users. This device will replace mouse with a simple motion sensor that sits on top of the monitor and is used to tracks the hand movements to control the cursor on the screen without the need of a mouse. So something similar to a Kinect that captures motion and tracks the movement of the users.
#2Eye movement tracker mouse:
Eye scanner for your personal computer that replaces the mouse and allows you to control the cursor on screen through the movement of your eyes. Clicking objects on the screen could be done easily by blinking your eyes etc.
#3Solar powered battery:
Solar powered battery that attaches the back of your cellphone and acts as a backup battery for your phone and it charges automatically and whenever your original battery runs out the solar powered battery kicks in.
