I made mug rugs for 2 craft shows and they didn't sell well at all. I got some great advice after the second show that I will pass on to you. People don't know "sewing lingo" so they don't know what a "mug rug" is. So display one with a mug and a cookie or other snack on it and put up a sign stating that mug rugs are little place mats made for your coffee, tea, soda or whatever mug or glass. Lots of good luck with the show.