Anchors (for people who are not so handy with the rebar and
torch):
http://www.pplmotorhomes.com/parts/r...ral-anchor.htm
(I did not check shipping cost on these.)
If you have your Woody's cages in rows, 2 anchors and a length
of cable or speaker wire or parachute chord or similar can
anchor several of them. Just drill holes in the side pieces to run
the cord through. It might need to be readjusted if the cages
sink down into the soil a little after a rain.