Google announced that they have added a "Donate" button to some non profits in their knowledge cards in the search results. The donate button lets searchers quickly give to the charity they searched for.
Google said this is first rolling out to those non profits that use Google for Nonprofits, which I believe is free. Google said after these customers are on-loaded to this program, they "hope that more opt in moving forward."
So here is what it looks like when you search for a non profit that qualifies for this donate button:
Forum discussion at Twitter.