The Bug-Out/Trekking Trolley.
This project started out with a post on one of the Aussi survival forums. A chap said that his pack was just too heavy when carrying enough water for a long trek. So I thought of a Trekking Trolley. Only to find out later from another forum member that the trekking trolley had already been invented and marketed!
Well I decided to make my own anyway as a cheaper alternative. I made this one out of old wheel barrow parts and a couple of bush poles. No doubt you will recognise the parts I used.