Geometry, 2

Reader sum1 writes in response this post touting the Q-Drum. He notes a similar product also launched in South Africa called the Hippo Water Roller. While a 1997 Time article reports the Q-Drum’s launch in 1994, the Hippo Roller Web site cites a South African Bureau of Standards 1992 Design Award.

Both are rugged, round water containers designed to be rolled on tough rural roads. But while the Q-Drum is shaped like a tubular donut with a hollow inner core, the Hipporoller is notched at both ends for the attachment of a clip-on steel tube one can use to to pull or push.

Pushing the container in front of the user has the additional advantage of acting as a buffer against landmines.