During World War I the Red Cross solicited contributions by literally sucking them out of a crowd with a vacuum cleaner.
The stunt took place on May 25, 1917, before the New York Public Library. From Scientific American: “While a soldier and a sailor urged the public to hand in their contributions the suction tube of the machine was reached out over the crowd. The suction was sufficient to draw up pieces of money of any denomination and deposit them in the bag of the vacuum cleaner. By this means it was possible to reach the crowd readily and it was unnecessary for a contributor to elbow his way through the jam in order to reach the Red Cross workers.”
The National Archives notes, “So great was the eagerness of the people to have their coins taken in by the cleaner that the bag inside the vacuum cleaner had to be emptied several times.”