Buying ones and zeros
From Daring Fireball:
...people will happily pay for things they can actually hold in their hands, but you can’t touch ones and zeroes.
Y'know, it'd be kind of cool to be able to buy a set of eight ones and zeroes with the binary value of your choice. I'm thinking they'd be a couple inches high, either black or available in different colors, and easy to stand up next to each other.