I do not know what you teach, or your areas of focus are,
but I would probably center around them,
possibly use some part of it to pull people in in a demonstration or photos,
things that make people think and stretch there views and the possibility of showing some thing that would make sense to many,
I went to a meeting a few weeks ago on cover crops put on by a neighboring NRCS office,
and there were some photos of there "rain fall simulator"
http://www.nrcs.usda.gov/NEWS/thisweek/images/rainsim02.jpg some more info,
http://www.ipm.iastate.edu/ipm/icm/2007/7-2/striptillage.html http://www.extension.iastate.edu/news/2007/may/140901.htm http://www2.ngdc.wvu.edu/products/conservation_model/index.html they at times would set up these rain fall simulators, and put trays of soil with various amounts of residue and in some instances growing cover,
they would time a sprinkler and would run on the samples of bout 1" of water, and as one can see the collected run off in the jars, and see which one would have let the water penetrate, by the amount of water and the conditions of the water run off one could see how much soils was washed away,
the samples were 100 % residue, 30% residue, 0% residue, and not till and range land, usually the 0% was well tilled land,
a short page on the how to make one, and prepare the soil samples,(different place, same idea)
http://www2.ngdc.wvu.edu/~hferguson/educationNGDC/ also a lot of more demonstrations, of soil water holding capacity, and so on,
http://www2.ngdc.wvu.edu/~hferguson/educationNGDC/ s short movie of the second system working,
http://www2.ngdc.wvu.edu/~hferguson/video_clips/four_minutes.avi demonstration like this get my attention, and you educate some one in the process, and spark a seed of possibilities