Our class put up a big tank (think a big, thin plastic pool, about a foot high and taking up about 50 square feet) filled with a few hundred goldfish (presumably one for every graduating senior) just in front of the school. Officials did nothing about it, and no one fed the fish, in the dead heat of late spring in northern Virginia. So, of course, all the fish died. So what did we do?
We made it a memorial for all the dead fish. They were all given names, and a large banner was placed under the tank (the tank was clear) for everyone to read.
I heard school officials were not pleased, but it is hardly the worst thing any students there did (though that doesn't really say much because my school saw very few real problems amongst the students).