THank you ! :) You could build one yourself you know ;) ;)

Ah thank you! I should amend the article to include that bit. We actually drilled holes through the wood and hammered rebar through the stuccoed poly bags to attach them. This was a big question for us and we had trouble finding good information about it. Ultimately we decided to "get some purchase" in that way, although some people do just "float" the building on top. We've had no issues with our method. Thanks for asking- that's an important point!