Ever wanted to use safe products instead of deadly ones like Clorox, Lysol, Glade and so on.. In fact, soapy water, chalk, beer, and many other common household materials work just as well or better at cleaning, and are a lot less toxic. If you need fresh air, open a window or spray scented water; instead of toothpaste, use baking soda.  I could go on, but you probably get the idea! This site pretty much lists everything I could think of and then some more...