Findings:

• mechanical cipher system
• pencil and paper
• paper and pencil games
• cipher
• cipher text
• substitution cipher
• monoalphabetic substitution cipher
• Caesar shift cipher
• simple substitution cipher
• homophonic substitution cipher
• polyalphabetic substitution cipher
• transposition cipher
• cipher alphabet
• asymmetric cipher
• symmetric cipher
• hybrid cryptosystem
• Pigpen Cipher
• Hash Cipher
• The Beale ciphers
• Caesar's Cipher
• atbash cipher
• Soviet Espionage Cipher
• Playfair Cipher
• M209 Cipher Machine
• Simon Singh's Code Book Cipher Challenge Cracked
• Stream Cipher
• synchronous stream cipher
• Additive Stream Ciphers
• self-synchronizing stream cipher
• Turning grill transposition cipher
• ERIKO-CHAN cipher
• cipher (user)
• Block cipher
• null cipher
• block cipher cryptanalysis
• Bacon Cipher
• Keyword substitution cipher
• Ideal cipher model
• running key cipher
• Hill cipher
• Permutation cipher
• random key substitution cipher
• Nihilist cipher
• ADFGVX cipher
• bifid cipher
• VIC cipher
• rail fence cipher
• Dorabella Cipher
• paper
• wax paper
• paper clip
• paper towel
• toilet paper
• rolling papers
• Little numbers on a piece of paper
• Brown paper bag
• papers
• Paper airplane
• Green Bar Paper
• Tractor Feed Printer Paper
• scrap paper
• Liquid Paper
• Paper that becomes aware
• Strip paper, rock, scissors
• Rock, paper, scissors
• The paper airplanes we threw out the window
• I thought paper cuts were like lightning
• paper snowflake
• The Federalist Papers
• Blotting paper
• Casse Paper
• Note paper
• Pajojery Paper
• paper mache
• Paper, and paper of color
• paper or plastic
• Teacher comments on papers
• carbon paper
• Funny paper
• paper toilet seat covers
• flash paper
• Hang paper
• Heavy paper
• paper money
• paper bag
• Randy's Rolling Papers
• White paper
• Lay paper
• Lay sour paper
• research paper
• India paper
• little paper umbrella
• origami paper
• wired rolling papers
• It's Only a Paper Moon
• The Great Toilet Paper Heist
• drool-proof paper
• When will the internet eradicate paper?
• eating paper
• Push paper
• the stuff they keep out of the papers, and off the TV, for your own damn good
• 25 Quick-Picks on 25 separate slips of paper
• The unique smell of American paper money
• seminar paper: 1984
• seminar paper: personal privacy
• The Slydini Toilet paper trick
• The book (a paper weapon)
• Paper Tiger
• Alpha paper
• Paper size
• If All the World Were Paper
• T.A.Z.: Communique #7: Psychic Paleolithism & High Technology: A Position Paper
• Paper Moon Diner
• Blood, paper and raw fear
• the paper world
• Parchment paper
• How to write an English paper and fail
• Shikishi
• Selling term papers on the internet
• The Worst Paper I've Ever Written
• notebook paper
• loose leaf paper
• Scroll of blank paper
• For want of paper
• engineering paper
• pad the length of a paper
• Your last act as a free man should of course be to burn the scrap of paper
• Paper Bag Head Boy (user)
• Use your paper towel to turn the doorknob in the bathroom
• wrapping paper
• The House of Paper Dolls
• How is it that Mexicans know neither Chili con Carne nor Toilet Paper?
• kraft paper
• butcher paper
• Sheets of blank fucking paper
• Does toilet paper go bad?
• pound book paper
• pound tag paper
• pound cover paper
• pound index paper
• pound bond paper
• pound blotting paper
• pound blanks paper
• pound postcard paper
• The Beaver Papers
• How to BS a Term Paper
• paper cup
• How to write an "A" paper with minimal effort
• How Liquid Paper invented the local news
• rock paper scissors spock lizard
• It's just a folded piece of paper till you let it fly
• John Wayne Toilet Paper
• White House toilet paper crisis
• paper memory
• paper embargo
• Jackey Paper (user)
• construction paper
• Young Rabbits in Curl Papers
• The rock, paper, scissors tendency in world tennis domination
• Papermaking
• Keep your eyes on your own paper
• Scissors Cut Paper Wrap Stone
• photographic paper
• staff paper
• Paper Hearts
• The greatest paper ever written

If you Log in you could create a "pencil and paper cipher system" node. If you don't already have an account, you can register here.