Well not the exact kite used in the show, but the same design. I flew it for the first time last weekend at a Kite Festival. Some photos:
http://www.flickr.com/photos/baker_1000/6121548628/
http://www.flickr.com/photos/baker_1000/6121007725/
http://www.flickr.com/photos/baker_1000/6121552362/
http://www.flickr.com/photos/baker_1000/6121553988/
I bought it on the link which is on the episode page for "Stranger in a Strange Land".