Diagram Category Index:

Bats -2 Bats
Bird -Eagle
Bird -Swan
Bookcase -Bookcase
Bookmark -Simple Bookmark
Box -Simple Box from square
Box -Simple Box from rectangle
Box -Tissue Boxes
Box -Truncated Cuboctahedron
Box -Yami's Pandora's Box
Box -Yami's Trinity Box
Christmas Tree -Yami's Tree
Fish -Polly the Finger Eating Fish
Fish -Jellyfish
Flower -Azalea
Flower -8 Petal Flower
Flower -Rose, Stand & Leaves
Flower -Tulip, Leaf & Stem
Holder -Business Card Holder
Holder -Yami's Magic Wallet
Modular -Yami's Fireworks
Modular -$ Polyhedra Sonobe
Modular -Butterfly Ball
Tesselation -Crowding Butterflies
Toy -Yami's Doodlebug
Toy -Yami's Dreidel
Toy -Yami's Jacob's Ladder
Toy -Yami's Little Blow Tops
Toy -Yami's Super Jumping Frog
Toy -Yami's Spinning Top
Vase/Basket -8 Cornered Vase
Yoda -Jedi Master Yoda

Click on photos to enlarge.

Kawahata's Jedi Master Yoda from Star Wars. Folded using Mulberry paper.

Fujimoto's Crowding Butterflies

Kalei Anne Lundberg's Azalea

Mantler's Bat
10 in. origami paper

Butterfly Ball Prints Print out Mari's designs for your Butterfly Ball
on typing paper

Kawamura's Butterfly Ball
assembled from 12 units

Click on photos to enlarge.

Cats
(L) model designed by Gilad Aharoni
(R) "Panter Cub" model designed by Michael G. LaFosse, Book: "Origami Jungle"

Robin and Cat
Cat by Gilad Aharoni
Robin by John Montroll

Origami Diagrams

Folding Help:

How to Divide a square or rectangle into 3rds, 5ths or 7ths is here.
How to cut a Pentagon from a square is here.
How to fold a Stretched Bird Base is here.

Paper Money - download a 4x10 inch oversized bill (front and back) for demonstrating money folding to a group. Print it out on light green paper for added realism.

Yami Yamauchi's Models:

Diagrams for Yami Yamauchi's models are here in Yami's Corner.
Fireworks, Jacob's Ladder, Pandora's Box, Super Jumping Frog, Trinity Box, Little Blow Top, Spinning Top, Dreidel, Doodlebug, Christmas Tree and the Magic Wallet.

Models:

Bookcase by Mari Michaelis

PDF - diagrammed by Mari Michaelis. Simple bookcase to store the books you make from David Brill's (miniature) Book model.
Video - Step-by-step video demonstration for how to fold the Bookcase.

Truncated Cuboctahedron Box by Kenneth Kawamura
This unique 2 piece box has a wonderful shape and a really nice folding sequence.

PDF - diagrammed by Mari Michaelis.

Tissue Boxes:

Tissue Box by Francis Ow
This model creates a tall tissue box (family size)
Model pictured on right
PDF - diagrammed by Mari Michaelis.

Tissue Box V2 by Paul Ee
Based on Francis Ow's model, this version creates a lower style box.
PDF - diagrammed by Mari Michaelis.
Video - Step-by-step video demonstration for how to fold this model.

Jedi Master Yoda by Fumiaki Kawahata

PDF - diagrammed by Mari Michaelis.
Video - Step-by-step video demonstration for how to create the Jedi Master.

Kawasaki Rose by Toshikazu Kawasaki
PDF - Kawasaki Tubular Rose with Stand and Leaves, Diagrammed by Carlos A. Furuti
Video - of creating the Stand and Leaves.
Video - of creating the Kawasaki Rose.

8 Petal Flower Traditional Model

PDF - diagrammed by Mari Michaelis.
Video - Step-by-step video demonstration.

Azalea by Kalei Anne Lundberg

PDF - diagram instructions from dev.origami.com.
Video - Step-by-step video demonstration. Includes how to fold George Rhoads' Double Bird Base.

8 Cornered Basket / Vase Traditional Model

PDF - diagrammed by Mari Michaelis.
Video - Step-by-step video demonstration.

Jellyfish by Michael Assis

Folded from a paper napkin, this clever model is based on the crumpling technique of Vincent Floderer.

PDF - Photo Steps diagrammed by Mari Michaelis.

Polly the Finger Eating Fish by Jeremy Shafer

PDF - Photo Steps diagrammed by Mari Michaelis.
Video - Step-by-step video for how to fold this Fish.

Business Card Holder by Mari Michaelis
This model fits all sizes of business cards. Holds approximately 8-10 business cards inside and 1 card in the front display pocket. This model was designed for Lizard Skin origami paper but can be made from any 7 inch/17.8 cm square of paper.

PDF - diagrammed by Mari Michaelis.

Eagle by Pascal Khadem

PDF - diagrammed by Mari Michaelis.
Video - Video instructions for how to fold this model.

Crowding Butterflies by Shuzo Fujimoto
Beautiful tessellation design.

PDF - Crease pattern instructions by Mari Michaelis.
Video - Video instructions for how to fold this model.
Patterned Designs PDF for model: Print out several patterned
designs by Mari, created for this model.

Fireworks by Yami Yamauchi

PDF - diagrammed by Mari Michaelis.
Video - Step-by-step video for how to fold and assemble Fireworks.

Butterfly Ball by Kenneth Kawamura
Fun modular model made from 12 units. After assembled, toss it in the air and give it a whack. The model will burst apart and butterflies will fall to the floor. FYI: The shape is a cubohemioctahedron (a faceted version of the cuboctahedron).

PDF - instructions, diagrammed by Lar deSouza. PDF created from gifs and annotated for clarification by Mari Michaelis.
Video - Video demonstration for assembling and disassembling.
Graphics PDF for units: Print out several designs by Mari, created for the ball's units.
Graphics JPGs for units: Butterfly and seasonal designs from Lar deSouza.

Mantler's Bat by Andrea Mantler
Andrea modified Rhoade's bat to perfection.

PDF - instructions at Andrea's Origami Gallery.
Video - Step-by-step video demonstration.

Tessellation Bat by Anna Kastlunger
I found this model to have some very clever folds. It works best on heavier paper, like typing paper.

PDF - instructions at Origami Österreich

Dollar Bill Polyhedra Sonobe Module
Also known as Toshie's Jewel, Crystal or Hexadron.

Photo Steps - Not a diagram, but step-by-step photos and text for creating the Polyhedra Sonobe Module from 3 dollar bills.

Easy Models:

Rectangular Box from a Square

PDF - diagrammed by Mari Michaelis. Simple box folded from a square piece of paper. Scrapbooking paper works great for this model.

Rectangular Box from a Rectangle

PDF - diagrammed by Mari Michaelis. Simple box that can be made from a rectangle, like a sheet of copy paper.

Swan

PDF - diagrammed by Mari Michaelis. Simple traditional Swan.

Simple Bookmark

PDF - diagrammed by Mari Michaelis. Simple bookmark to hold your place.
Video - Video demonstration showing that this is so simple, it can even make itself.