Batterflies on our street! Outhouses for guano!
I was having a conversation with (I believe, my memory is somewhat of a fickle thing) Plez, Jelee, and Railroadbaron about this idea. We should be able to have batterflies on our street, and there could be a little outhouse that they do their guano-y business in. Maybe fly towards it with a little newspaper? We could have batterfly feeders that we stock to get the guano churning!