I've been donating to charities through affiliate links and Smile for a while. Whenever I plan to make a purchase I go to the smile.amazon.com URL while also ap

I've been donating to charities through affiliate links and Smile for a while. Whenever I plan to make a purchase I go to the smile.amazon.com URL while also appending a charity's affiliate link (e.g. "/?tag=AFFILIATE-ID") to the URL. I think charities will still get a significant amount from my purchases, since AmazonSmile was only 0.5%, while affiliate links for many categories are 4% or higher.