Recently I've been using our #CW-6L (latex free) deli tray covers quite frequently. They work great for parties especially those outdoors to keep bugs off the food while still showing off what's inside. They're sturdy enough for several uses but also cheap enough to use once and throw (or give) away. We sell them in packs of 10 or 100 and when completely stretched they reach 30".
Last week I made a rhubarb pie to take to my parents and covered it with one of our deli tray covers and it worked perfectly.