In a design competition by Lite-On this was created by Frank Guo. The mouse is made of a curved material that can be clipped to the edge of the laptop so that it can be carried by one hand.
Guo envisions a C-shaped mouse that would be easy to grip and control, offering a touch-based scroll and button capability. The bottom of the mouse would be flat, so it could glide around on a desktop or other even surface, while the inside would be made of a ribbed rubber material, making it safe and easy to clip around your other gadgets.
The design is based on shape and materials. Right now, the idea is nothing more than a concept. If you love using a mouse, then we can hope together that this comes to fruition.