Donor-Advised-Fund, a vehicle which allows one to place money into an investment account where it can only be used to make charitable donations. It allows you to commit yourself to giving (you can't take the money back to spend on beer) even if you don't know what's best now, or can allow you to accumulate donations over time so that you can get leverage with the simultaneous disbursal of a big chunk. Here's the Fidelity DAF site.