Crajon, hop over to serenitystuff.com.
Click on the "props" link. You will find Ben's prop replica currency, currency signed by Nathan Fillion sold on eBay by his brother, Jeff, and the link to the propstore.com.

I can personally vouch for the incredible service of the nice folks over the pond at the Prop Store -- it took me fifteen minutes to unwrap my shiny prop galley bowl! And comes with a very nice certificate of authenticity of whichever item you purchase from them. I will certainly be a repeat customer! (such guilt pangs, though, for being so greedy!)

Don't forget to keep us up-to-date with the adoption proceedings! I'm so excited for you!

well ther should be a link somewhere on this site to a prop store they have some cool stuff