Check out intelliPaper, a company making USB drives out of paper. It’s perfect for a business card to have your resume stored on it. It could also be fun to have a birthday card that had photos saved to the drive.
The only downside that I can see (aside from a possible environmental impact), is that you tear the paper around where the drive connectors are. If you didn’t tear cleanly, you could make a mess when you shoved it into your computer.
