11 USC 542 requires the following.....
"(a) Except as provided in subsection (c) or (d) of this section, an entity, other than a custodian, in possession, custody, or control, during the case, of property that the trustee may use, sell, or lease under section 363 of this title, or that the debtor may exempt under section 522 of this title, shall deliver to the trustee, and account for, such property or the value of such property, unless such property is of inconsequential value or benefit to the estate."
Given the trials and tribulations of the City of Detroit, I think you should return the "property of the city" and help us save some of the cities art collection...... Aside from that I like the idea of using it to store the bottle (or two) of your choice.