I made a mini notebook with old credit cards, a binder ring, a clip and index cards : r notebooks Amazon.com : 1InTheOffice Index Cards with Ring 3x5, Flash Cards with Binder Ring, Single Hole Punched Notecards, White, 100 Cards : Office Products Index Card Ring Binder Etsy Index Card Binder Amazon.com : Mr. Pen Loose Leaf Binder Book Rings, 2 Inch, 20 Pack, Metal Binder Rings for Index Cards, Keychains, School, Home, Office, Silver : Office Products Index Card Holder 2 Ring Binder