Many of us keep our Halloween pumpkins outside well after the holiday -- the cooler temperatures help preserve all types of gourds for months to come. When you are ready to toss them, don't think trash, but the backyard instead. Tossing them into the compost bin is one easy way to dispose of them, but you can also just bury a hole in the yard, fill it with the pumpkin, and cover it back up with soil. It'll slowly degrade, while giving back nutrients to the soil. The best part? It may even germinate into a mini pumpkin patch when the temperatures get warm again.