Bitcoin Spinner is good, but I like the Electrum model more. And we need a lightweight client for iPhones, because iPhone suers are usually the early adopters.

And currency conversion built-in would be nice feature for those apps, so that people can easily send money back and forth.

I kind of gave up on brick and mortar business. Maybe some internet business. Most likely ever growing mass of speculators supporting a long time bull market hitting critical distribution at some point so amazon and co. accept it and it becomes a currency.
we don't have a hen egg problem as bitcoin already works good for speculation. with growing volume, the rest can and will follow.

Tee-Shirt idea:

                                1QBDLYTDFHHZAABYSKGKPWKLSXZWCCJQBX

                                                      What's Your Address?

(that's a real address I C&P from another thread)

Note, I didn't ask "what's you Bitcoin address" thereby leaving enough to the imagination, but a Bitcoin logo on the back of the shirt would work. Or do it reversed: logo front; message back.