The criteria we had were:
* something to help farmers, their stock or the crops
* it had to be easy to use
* it could be used over and over again
The children's designs reflected the children's understandings of the state of our farmers, and, as always, were very creative. We had a giant dams; various water storage and distribution systems; new, fresh green grass; cattle feeding systems and machines that created water - just to name a few!