Perhaps a DAF, a Donor Advised Fund, is an idea for you to consider. Any money put into a DAF is considered as given to a 501c3, and you can disperse to other non-profits through the DAF. You only need the single receipt from giving the DAF. I would recommend sticking to those run by the large brokerages such as Fidelity, Schwab, and Vanguard. There are many details one should clarify if one wishes to use a DAF, but that is beyond the scope of what one should rely upon a forum for.
