The IAC is activated as an approved 501(c)3 on Amazon Smiles. If you follow the link above all eligible purchases you make on Amazon through this link will give the IAC .5% of your purchase price. It doesn't sound like much, but pennies add up to dollars.
AmazonSmile is a website operated by Amazon with the same products, prices, and shopping features as Amazon.com. The difference is that when you shop on AmazonSmile, the AmazonSmile Foundation will donate 0.5% of the purchase price of eligible products to the charitable organization of your choice.