Inventor E.M. Waring patented a novel forerunner of the vacuum cleaner in 1914. Rather than an electric motor, his “suction cleaning apparatus” was powered by bellows strapped to the operator’s feet:

An apparatus of this kind presents the advantage that the operation thereof happens wholly instinctively, so to speak, and the operator is at liberty to give the entire attention to the handling of the cleaning nozzle and to the object to be cleaned.

He also envisioned a dust bag made of cheesecloth, “permitting passage of the air but retaining the dust.” Kudos.