Throwable Fire Extinguisher. The patented and officially approved fire-dousing "grenade"... The container is made from special breakable plastic that poses no risk to the thrower or other people. The agent inside will then extinguish the flames. It contains 500ml (16.9 fl oz) of ammonium phosphate dibasic and ammonium bicarbonate, and has the extinguishing capacity ten times that of water. However, despite being chemical, the non-toxic agent is safe. $85
Joggobot will hover a few feet in front of the jogger to provide encouragement. Currently under development by a team at the Royal Melbourne Institute of Technology in Australia, you are able to programme the helicopter via a smartphone app in order to control the kind of pace and height it will remain at.