Tools
Cowboys all needed different tools based on the area that they inhabited. However there was always a base to these tools. That is, a cowboy will never be without the following items:
Lariat; from the Spanish "la riata," meaning "the rope," a tightly twisted stiff rope with a loop at one end enabling it to be thrown to catch animals (sometimes called a lasso, especially in the East, or simply, a "rope").
Spurs; metal devices attached to the heel of the boot, featuring a small metal shank, usually with a small serrated wheel attached, used to allow the rider to provide a stronger (or sometimes, more precise) leg cue to the horse.
Rifle; a firearm used to protect the livestock from predation by wild animals. A pistol might also be carried. The 19th and 20th century American cowboy favored repeating rifles with inexpensive, fairly low powered, centerfire cartridges such as the .44-40 Winchester and .25-20 Winchester. The pistol often used the very same cartridge on a dual-use basis. Modern cowboys may carry a .22 caliber "varmit" rifle for modern ranch hazards, such as rattlesnakes, coyotes, and rabid skunks. In areas near wilderness, a ranch cowboy may carry a higher-caliber rifle to fend off larger predators such as mountain lions.
Knife; cowboys have traditionally favored the pocket knife, specifically the folding cattle knife which evolved into the stock knife which is still popular today. The knife has multiple blades, usually including a leather punch and a "sheepsfoot" blade.
Other weapons; while the modern American cowboy came to existence after the invention of gunpowder, cattle herders of earlier times were sometimes equipped with heavy polearms, bows or lances.