Just came across this today. It's so simple and obvious, it's a wonder that it never occurred to me before.
This is a great idea for anyone dealing with HOA Nazis or other antenna-restricted or antenna-limited places:
http://www.zianet.com/dhassall/flowerpot.html
Idea is quite simple: Mount one or more hamstick antennas on a flower pot, cover with PVC to make it look like a tressel or similar flower support, and you have a mini-antenna farm virtually in plain sight!
Brilliant!