I toyed with several designs and finishing techniques, but ended up with the simplest version working the best in my trials. It is a basic square of fabric with edges finished with a zigzag machine stitch, then dipped into hot beeswax to completely saturate the fabric with wax, and then clean all the excess wax off to make it user friendly. When they are new, they are quite stiff, but soften up with repeated use.
The zigzag stitched edges are so that there is very little food and crumbs that are caught and held by folded over hems. The stitching is essentially "held" down by the beeswax. to maintain, all you need to do is shake the crumbs off and wipe it down, If its really dirty, it can be washed. I would recommend hand washing over machine washing and NO dryer. It drys pretty quickly just air drying.