Airmail by Herman van Goubergen

Diagrams in BOS Magazine 174
Diagrams in Le Pli 62-63
Diagrams in Origami USA Convention 1996
Diagrams in Quadrato Magico Magazine 41
Folded from a square of cardstock

Flapping wings envelope by Michael G. LaFosse

Diagrams in BOS Convention 2000 Spring
Diagrams in Origami Stationary by Michael G. LaFosse
Diagrams in OrigaMIT 2015 Convention Book
Diagrams in Trash Origami by Michael G. LaFosse and Richard L. Alexander
Diagrams in Origami Gift Cards by Michael G. LaFosse and Richard L. Alexander
Folded from a square of hand-made paper

Horse pop-up card by Sy Chen

Diagrams in Horses in Origami by John Montroll
Diagrams in BOS Convention 2002 Spring
Folded from a square of Tea Stained Leather scrapbooking paper

New kind of envelope by Cindy Ng

Diagrams in Travel Origami by Cindy Ng
Folded from 2 rectangles of animal print origami paper

New perspective envelope by Jeremy Shafer

Diagrams in BARF 2010 Fall by Jeremy Shafer

Sealed with a kiss envelope by Michael G. LaFosse

Diagrams in Ultimate Origami for Beginners by Michael G. LaFosse and Richard L. Alexander
Folded from a square of origami paper