Waste materials need to be transported from where they are generated to where they are processed.
Transport can be one of the most expensive parts of any waste management system, and we are keen to minimise this cost.
A bicycle is an obvious solution although it can be difficult to ride on the sand, and a pick-up truck costs a lot of money to run. We have seen some interesting designs for tricycles and tuk-tuks.
Can you come up with something practical? It needs to be easy to build, cheap to run, and preferably be able to collect up to three recyclable materials (in separate containers) at a time.