Restaurants will often put takeaway in a plastic container. Megan McCuller from weblog Recylart shows you how to reuse those containers for growing plants.
McCuller tested containers with a clear plastic top on and with it off. As expected, the tomato plants in the one with the plastic top sprouted faster. Any similar container can be used as long as the top is clear and you can provide proper air flow.
DIY Tupperware Greenhouse [Recyclart]