"The Huffington Post" just did an article on why fun-size candy is terrible for the environment.
We eat millions of them around Halloween each year. And apparently the wrappers never get recycled, because it's not cost-effective. So they just end up in landfills, or in the ocean.
If you want to be more eco-friendly, they suggest handing out things like Nerds, Lemonheads, and Milk Duds that come in cardboard packaging instead of plastic.