If you're willing to secure your most sensitive data in the cloud, Clipperz lets you go for broke. Clipperz calls itself "a Web Rolodex, a card index where you can enter any sort of confidential data without worrying about security." It can be used to store and freely organize passwords, confidential notes, burglar alarm codes, credit and debit card details, PINs, software keys, and so on. The card system allows for an unlimited number of fields, so you can customize it any way you like. You could create custom cards for your driver's license, passport information, burglar alarm codes--basically anything that's important to remember and keep safe offsite.
This browser-based plugin is completely free. There is no upsell popup to a premium package. It wins on price, but loses on features.