MORE ON THE DONKEY DUNG as Holy Land souvenir from Green Prophet:

Recycling and Deifying Donkey Dung in Israel

Dec 29th, 2008 by James Murray-White

[...]

Menachem Goldberg, who runs a visitors centre at Kedem, has come up with the extra-ordinary idea of preserving pieces of donkey dung within a plastic cube, that is inscribed with holy writings from the Talmud. Mr Goldberg says that the idea came to him from the Talmudic phrase: (and I quote) “Let the Messiah come…may I be worthy to sit in the shadow of his donkey’s dung”. Make of this what you will!

[...]

And there's more video too.

Background here.