Different Designs for Food Covers

When I moved to this farm from New York City, I didn't even know what these were: Now I use these food covers daily, from roughly April to September. There are flies everywhere on a farm, and I leave eaten-off-of dishes out all day, re-using them for each meal, so that I have less dishes to do at the end of the day. (Saves both water and time.) The food covers we have are from the local Walmart, cheap and junky looking. For something I touch multiple times a day, I'd prefer something...