You know what's absolutely perfect for Ferengi?
Dilithium crystals. THEY'RE REAL PROPS HARRY!
And sadly I've seen them go for quadruple that at auctions. Not charity auctions either.. it's kind of weird how people will bid for all kinds of crap at cons that a simple search of their communicator will tell them is priced way over the already ridiculous prices.
I was going to say why would someone spend $20 on a shard of glass and/or plastic but I've probably spent more for less. Picard kept model ships in his ready room too you know.