Black Friday shopping this year - the guys from that NSFW card game Cards Against Humanity took our entire store offline, and put up a simple payment form where people could give them $5 - for NOTHING!.
11,248 people gave us $5, and 1,199 people gave us more than $5 by filling out the form more than once. One enthusiastic fan gave us $100. In the end, they made $71,145.
Cards Against Humanity is known for our charitable fundraising - since 2012 they've raised nearly $4 million for organisations they love like Worldbuilders, the Sunlight Foundation, the EFF,DonorsChoose.org, the Wikimedia Foundation, and the Chicago Design Museum. They even started a $500,000 full-ride scholarship for women getting degrees in science.