Character Record Folio

From the publisher:

You need more than a flimsy piece of paper for your character and that's where the d20 System Character Record Folio comes in. Say goodbye to cramming your notes and magic items onto a single sheet, the folio is designed to handle your character for the entire campaign. Its 16 beautifully designed pages include great add-ons like mini-record sheets for your paladin's warhorse, familiar, and cohorts, and adventure logs that let you track important events and NPCs. The d20 System Character Record Folio is good for any character in any d20 game.

The d20 Character Record Folio won the Origins Award for Best Game Aid of Accessory of 2001.