The American Civil Liberties Union threatened to sue the city of Frederick, Md., over a Ten Commandments monument in a city park, so Mayor Jennifer Dougherty came up with a clever idea: She sold the land on which the monument sat to the local chapter of the Fraternal Order of Eagles. Since it's no longer on public land, she argued, it doesn't violate the separation of church and state--even though it's still in the middle of a city park.

It's similar to the Jewish custom of "selling chametz" for Passover. Chametz refers to any grain product except matzah prepared specifically for the holiday, and Chabad.org explains the sale procedure:

A person who owns a large quantity of chametz which he is reluctant to dispose of, because doing so may cause him considerable financial loss, may sell his chametz to a non Jew.

After writing a bill of sale, one may leave the chametz in his home without transgressing the prohibitions of not seeing or having chametz, since the chametz no longer belongs to him.

However, it must be set aside in a special place which is rented to the non Jew who has purchased it, so that the chametz becomes the property of the non Jew until after Passover.

The place where this sold chametz is stored should be inaccessible, so that neither he nor the members of his family take anything from there through force of habit. The bill of sale for the chametz states that he is selling his chametz to the non Jew for a specific price. The non Jewish purchaser then gives him a down payment either money or something with intrinsic value, to acquire ownership of the chametz.

A stipulation is added to the bill of sale, stating that if the purchaser does not pay the balance due by the end of Passover, the chametz will revert to the original owner at that time that is, at the end of Passover. The non Jew's failure to pay will not be seen as having retroactively invalidated the sale.

Thus, during Passover, the chametz belongs to the non Jew and the original owner is not liable for having chametz in his possession on Passover.

You can even sell your chametz online.