At first glance, you may think you're looking at some type of strange material from another planet, but in reality, it's just Cover Blubber. It's essentially an elastic rubber-like wrap that easily fits over most bowls, jars, and even fruit to for an airtight seal to preserve freshness. In addition to being constructed from a EU and FDA-approved food-safe Sticky Rubber, it's reusable and can also be tossed right into your fridge or freezer. Product page. Continue reading for another picture and more information.
ThinkGeek says, "But don't let your uses for Cover Blubber stop at food. Pop one over the top of your gallon of paint to go take a coffee break. Or cover a craft project, like a bowl of paper mache. Keep some soil moist. Put one on your soda to keep it fizzy overnight." More information.