Though I'm not a currency collector (but I have a few ), I do find it interesting and colorful. Also the repeating serial numbers, from Chuck Mades, etc.

At the convention, the guy at table 28 (Michael Lewis) had some interesting currency along with his gambling devices, chips, go-withs and other casino stuff.

And Andy Hughes' "horse blanket" currency is cool. Plus Michael (?) from Houston had interesting currency posts a few years back, before he passed away.

Maybe I'm a currency collector wannabe? But I don't have the funds to start another area!