You don't need a mouse mat with an optical mouse! (As long as your work surface is reasonably smooth it will work perfectly; I've not used a mouse mat for about a decade!)
Just had a thought,...the mouse will have to be on the same surface as the lappy,...yeah? Only I use it on a computer desk, but at the very edge of the right, cos that's where my knees go. I have a set of drawers about 6" (I'm not metric either, lol!) lower than desk to the right...will that work?
I got a Logitech gaming mouse, wired and more buttons than my keyboard, a great mouse, it even has pretty lights on it and the weight is also adjustable by adding or removing weights.!! mind you it set me back £70.00. worth every penny though.
I just can't use a touchpad so always have a mouse. Wireless, corded, optical, pretty changing colours, whatever they all break within a couple of years so don't spend much. I also haven't used a mousemat in years.