Taking the cue from Ed's previous post, about the small door installed on a tree hole
http://gawker.com/5992946/san-franci...-found-in-tree

I made one, with a few extras, to fit between tree roots:
http://www.flickr.com/photos/43836144@N04/

It's been donated to the Master Gardeners for their fund raiser, coming up April 20th.

Sonny