A few months ago, Paypal introduced the Paypal Security Key to help prevent account theft. The security key is a device that generates 6 number code every 30 seconds. Once you have the key, you will type this changing code into your account along with your Paypal password. I think this is essential for anyone who uses Paypal. I know this is obvious, but just remember not to tape your account name to the keychain!
It would be great if a company like RSA came out with a security keychain that allowed you to sign up all of your various accounts (banks, registrars, email accounts…etc) requiring passwords. I believe consumers would be in favor of this, but it would take a huge effort to get companies on board. If you find the Paypal keychain useful, why not contact some of the companies you do business with and ask them to look into a security keychain for their company.