[mrkickling]

Well, since it's a crypto-currency, maybe something cryptographic? But I see the point, people associate currencies with coins.

[allemagne]

How do you visualize cryptography? A padlock? It might be a cool image to have a stack of those "B" coins with holes punched through them attached to a lock. I don't know if that would really help describe what bitcoin is though.

[maxerickson]

A police officer peaking around his blindfold at an ostrich with its head buried in the sand?