Basically, I'm just asking this after I've seen Jacobs/MiB's Dagger on sale for about $150 (My Sterling - Dollar conversions fail) on eBay.
http://cgi.ebay.co.uk/Lost-Prop-Room-MIB-Jacobs-Dagger-nt-Poster-Dharma-/250640918253?cmd=ViewItem&pt=LH_DefaultDomain_2&hash=item3a5b5ce6ed What would it be? There are so many things I'l kill for :D
Personally, it'd have to be the statue of Taweret's foot, the WHOLE Black Rock (C'mon, how awesome would that look on a front lawn?) Or my own Dharma van, complete with Beer :D
What would you want, and why?