Portable mouse drive that plugs into the usb drive of your computer

I will have to draw some designs but try to get the best picture in your head from this. Ever get tired of having to sit at a table to use your mouse? when your laptop is supposed to be useable in your lap? well with my latest Idea you can just simply plug in this little table like thing (about as big as a mouse pad) and it has a moveable mouse attatched right to it so it wont fall of and it just plugs into your USB drive and hangs on to the side of your laptop with two prongs on the top and bottom. (is made for both left and right handed people.)