Anti-Theft Lunch Bags

The Anti-Theft Lunch Bags are plastic zipper bags with green splotches painted on both sides. These splotches are made to look like fungus on a expired moldy bread, so if a sandwich is placed inside the bag, the bread will look moldy and spoiled. These bags are also reusable. It is a simple yet genius idea to stop people from eating your packed lunch. Who would want to steal bread that looks this disgusting?
I think the Anti-Theft Lunch Bag is a good example to show that with a creative mind, where you can make a very interesting and quirky idea from a seemingly normal things to solve problems effectively.