I shop quite a bit online, not just for vaping supplies. There is a free app called iGive that you can download, and a small percentage of your total sale will be donated to an organization that you specify. CASAA is one of the organizations that you can designate. Walmart, Payless, drugstore.com are some of the sites that support iGive. There are also higher-end stores like Macy's. I don't know the whole list. Percentage of sales that are donated vary from store to store. They send emails advising of how much your organization has been helped financially. They send you emails letting you know how much you have contributed. I have been using it for a year now to donate to a different organization, but, when I heard that they allow you to designate CASAA earlier this month, I switched to CASAA. Easy as pie to download and use, and a good way for those of us who are tight financially to contribute.