20 million packed lunches a day (in the US alone) means a lot of plastic wrappers being used and thrown away every day. Enter the Wrap-n-Mat - a reusable lunch wrap which is more environmentally friendly then the disposable type, and can also be used as a place mat. They are good for fundraisers too.
Wrap-n-Mat via ParentHacks

Instructables has a tutorial on how to use plastic drink bottles as seed starter green houses. It’s easy to do, free and you won’t need to use grow lights to warm your plants, the bottle and the sun will provide enough warmth for the seedlings.