I might have told you about this already, Richard, but my neighbor used to keep a 55 gallon drum of moo juice between our gardens when I was a kid.
You just fill the drum with cow poop, add water, and enjoy.
It takes the mad scientist aspect out of it, but still cool.
I just took an updated garden video. Gonna upload it now and post the link when it's done.
It's in HD, so it'll take awhile.