Niche crafting sites such as Circle of Crafters, Handcrafted Greetings and IrisFolding have several different iris folding template categories available for free to site browsers. These templates range from basic patterns such as shapes and alphabet letters to more complex patterns such as hearts, stained glass windows and four-leaf clovers.
Iris folding is a paper folding technique that involves folding strips of colored or patterned paper into a spiraling pattern so that the middle of the spiral represents the iris diaphragm of a camera lens. It originated in Holland and traditionally uses origami paper for the actual design and holographic paper for the center of the design. Crafting websites emphasize that iris folding can be done with many different types of paper, such as leftover gift wrapping paper or cardboard stock paper. Iris folding is an extremely popular crafting technique that is used to create folded greeting cards, scrapbook pages or framed and hung designs.
Circle of Crafters offers a free online membership that provides members with a new pattern via email each month. The website also offers a massive archive of past patterns, including animal patterns such as cats and dolphins, hobby patterns for golf and baseball, and seasonal patterns for Christmas, Hanukkah or Halloween.