I'm on a mailing list for an all-mom all-female punk band called Placenta, whom I swear I will go see play someday, and got the following from them. I did it, it's legit, and what a great way to help other women!!!!

Women's shelters in the U.S. go through thousands of tampons and pads monthly. Assistance agencies generally help with expenses of "everyday" necessities such as toilet paper, diapers, and clothing, but one of the most BASIC needs is overlooked - feminine hygiene products. (Yes, sexism is still alive and well.)

Seventh Generation, a green paper products and cleaning products company, will donate a box of sanitary products to a women's shelter in your chosen state - just for clicking the link. Talk about easy (and, yes, it is Legitimate)!
www.tampontification.com/donate.php

Thanks - and pass it on!