Here is a great chart and article on natural household items you can buy and use them in a variety of ways at home.  This isn't the end all be all of lists, but if you're looking to save money and take a step in the right direction this is a great place to start.

You can view the chart and other tips and tricks at this article:
3-in-1 Household Items to save money and avoid toxins

You can reduce cost and damage to your hair by trying this method for a chocolate color.  This also helps to reuse your coffee grounds.  I would love to hear from anybody that has tried this.  Does it work well and last long?  

Here is the article to learn how:
Dye Your Hair Using Coffee