Rickrack is a "flat narrow braid woven in zigzag

Zigzag

A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular....

 form, used as a trimming for clothing or curtains."

Made of cotton

Cotton

Cotton is a soft, fluffy staple fiber that grows in a boll, or protective capsule, around the seeds of cotton plants of the genus Gossypium. The fiber is almost pure cellulose. The botanical purpose of cotton fiber is to aid in seed dispersal....

 or polyester

Polyester

Polyester is a category of polymers which contain the ester functional group in their main chain. Although there are many polyesters, the term "polyester" as a specific material most commonly refers to polyethylene terephthalate...

, it is stitched or glued to the edges of an item. Its zig-zag configuration repeats every third of an inch (about one centimeter) and is sold in multiple colors and textures. Rickrack's popularity peaked in the 1970s and is associated with the Little House on the Prairie

Little House on the Prairie (TV series)

Little House on the Prairie is an American Western drama television series, starring Michael Landon and Melissa Gilbert, about a family living on a farm in Walnut Grove, Minnesota, in the 1870s and 1880s. The show was an adaptation of Laura Ingalls Wilder's best-selling series of Little House books...

and the pioneer sentiment brought about by the 1976 American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

bicentennial.