Here is an article that shows you a multitude of easy and inexpensive ways to rid your home of flies (fruit, black, et. al.).
Here is an interesting and ecological idea that is new to me: instead of cellophane, using beeswax to wrap your food in the kitchen. You can get these wraps from a company called Patabee. patabee.com/
Here is a nice guide to nontoxic methods for removing a variety of stains:
I find this site particularly creative in their ideas for cleaning and organizing. It's a very interesting site for other things too--specializing in the needs of small apartment dwellers. www.apartmentherapy.com
Magic Erasers are not completely eco-friendly but in a pinch they are very handy. Here is a resource for many handy things that you can use a Magic Eraser for including piano keys, leather, and clothing stains.