File this under: things you didn't know you needed but do..
:) It's an "alfresco bowl cover" to keep flies, etc. off your covered dishes at picnics or cookouts. I saw this a couple of years ago on a blog (was it Sew, Mama, Sew maybe??) but have modified it to use laminated cotton on one side to make it easily wipe-able.
I also use whatever I have around for the weighted corners...in this case covered buttons. I've also used beads or little bolts. You can make a few of these covers out of 1/2 yard of laminated cotton and 1/2 yard of regular quilt weight cotton.
After a simple straight stitch all the way around (leaving a 2-3 inch gap for turning), turn it right side in and top stitch all the way around. It's ready!