mouse pad challenge

Hey, my mouse pad at work is disgusting! In fact, I'm taking a break from work to note this... Rather than buying one for a dollar, I was thinking about how one could be made or reused!

This is my thought- take it home, wash it, cut a new shape and then affix fabric to the top?
So, what kind of glue? I may have to try this a few times...

Any ideas for materials (glue/adhesive)? Please help!