Gaming surface

[CliffyG]

My computer desk is a very small and the keyboard and mouse are on a tray that pulls out. Due to this I'm quite limited with what I can fit on it. All of the wide surfaces are far too wide to fit in. What choices do I have? Cutting presumably frays the edge and will eventually ruin it but would one be ok if it was folded over itself on the bit below the keyboard?

EDIT

This one for example is the perfect size depth wise but about a foot too wide:

https://www.overclockers.co.uk/cors...loth-gaming-mouse-mat-extended-gs-01b-cs.html

 

[CliffyG]

I've gone for the one I linked above. Will fold it short term as will get a new desk in the next couple of months.