Bunch O Balloons fills water bombs in bulk• gizmag.com
Each Bunch O Balloons connects directly to the end of a hosepipe. The water flows down the tubes into each individual balloon, simultaneously filling them all with water. The balloons are already tied, so when they're full you simply shake them out to seal them ready for throwing. Each Bunch O Balloons contains 37 balloons, with the inventor, Josh Malone, claiming this means it's possible to fill 100 every minute.