You may not see a kund unless you travel to India, but water harvesting happens closer to home, too, using things like rain barrels. Investigate commercially-available water harvesting devices, and host a design competition for new solutions.
Humans aren’t the only organisms who need to harvest water to survive; a variety of plants and animal species have evolved ingenious ways to capture and store water where it’s scarce. Research examples like the Namibian fog-basking beetle, the Australian mulga tree, and kangaroo rats. Do they suggest any interesting applications for humankind?
Biomimicry is the practice of “taking a page” from nature in order to solve human problems. Learn more about it by watching the TED talk “Janine Benyus: Biomimicry in action” at http://www.ted.com/talks/lang/en/janine_benyus_biomimicry_in_action.html.
BBC News: The technology of saving India’s precious water supply (09/12/2011) http://www.bbc.co.uk/news/business-14847808
India’s Centre for Science and Environment: Community-based Water Management Initiatives http://www.rainwaterharvesting.org/Rural/Community_based_initiative.htm