3d printing grips on mouse

I saw somewhere rubber grips for mouse for 3d printing. It is interesting idea, because computer mice are to small, i have large hands and i have no grip. You can order somewhere to let them 3d print parts for you, problem is design. Would it be possible to 3d print grips for mouse, which you just put on it, to make it more wider and longer ? I don't know ahead in time how wide i need them and mouse has curves, i have no idea how would i measure them so 3d printed grips would fit on the mouse. I would like it to make longer and wider. But i don't know how i would infer dimensions, i have razer deathadder essentials. I don't follow 3d printing and i didn't find much, i couldn't even find site when i see this idea again. I don't know whether there is some site, or forums where people do this. Because that would help me a lot.

BUMP !!!