Amazon Smile

AmazonSmile is a website operated by Amazon that lets customers enjoy the same wide selection of products, low prices, and convenient shopping features as on Amazon.com. The difference is that when customers shop on AmazonSmile (smile.amazon.com), the AmazonSmile Foundation will donate 0.5% of the price of eligible purchases to the charitable organizations selected by customers.

No fees and signing up is free. If you already have an Amazon.com account, you just have to go to smile.amazon.com and sign in using your current Amazon.com user id and password.