The Pet Rock was a throwaway idea, for the thought. What we really need is a Digital Good, capable of being sold or transferred. It can be paired with bitcoin, and then all transactions are for that product, not the bitcoins. Could be a e-card or something like that. As long as Bitcoin itself is not the item being sold for dollars, then it can be used as a part of the transaction.

An e-card would be difficult to justify for such a large transaction though. Maybe if someone developed a simple piece of software around bitcoin, made it open source, allowed people to alter and update it, or it could be a simple program, with updates. It could potentially justify the sales transactions. In essence the software would be free, but people could charge any amount they want for it, and that is the product being traded between people, not the currency of bitcoin.