Unique way

The origins of the idea of dumping cold water on one's head to raise money for charity are unclear and have been attributed to multiple sources. From mid-2013 to early 2014, a challenge of unknown origin often called the "Cold Water Challenge" became popular on social media in areas of the Northern United States. The task usually involved the option of either donating money to cancer research or having to jump into cold water.
One version of the challenge, which took place in New Zealand as early as July 7, 2014, involved dousing participants with cold water and then donating to a charity;
for example, the Auckland Division of the Cancer Society of New Zealand. As with similar challenges, it was usually filmed so footage can be shared online.
The National Fallen Firefighters Foundation popularized the "Cold Water Challenge" in early 2014 to raise funds as an unsanctioned spin-off of the polar plunge most widely used by Special Olympics as a fundraiser.[6] On May 20, 2014 the Washington Township, New Jersey fire department posted a video on YouTube participating in the "Cold Water Challenge" with fire hoses. Participating members of the department were subsequently punished for using fire department equipment without permission. A number of criticisms have arisen relating to the campaign, accusing it of being self-congratulatory,[30] focusing primarily on fun rather than donating money to charity, and as an example of substituting a trivial activity for more genuine involvement in charitable activities. Writing in The Daily Telegraph, William Foxton described the challenge as "a middle-class wet-T-shirt contest for armchair clicktivists".
William MacAskill, Vice-President of Giving What We Can, suggested that the challenge encouraged moral licensing, meaning that some people might use taking part in the challenge as a substitute for other charitable acts. He also proposed that by attracting donations for ALS, the challenge was "cannibalizing" potential donations that otherwise would have gone to other charities instead.
American stunt performer and TV personality Steve-O questioned the campaign, suggesting that celebrities' videos generally forgot to share donation information for ALS charities, and that the initial $15 million dollars in funds was insignificant, given the star power of the celebrities participating. He noted that, of the videos he viewed, only Charlie Sheen and Bill Gates noted that the point is to donate money.