The Swiss Army Knife is a signature of the American TV show MacGyver, wherein MacGyver often improvises tools that are needed to solve problems. He often used his knife to help build mechanisms out of common items, which led to sayings such as "making a rocket out of a matchbox and a paper clip." In fact, this has led to many discussions to attempt to list the variants that were used. Current lists show nearly every model available in the US during filming (see: list of problems solved by MacGyver).