Nevada law defines a deadly weapon as “any instrument which, if used in the ordinary manner contemplated by its design and construction, will or is likely to cause substantial bodily harm or death” or “any weapon, device, instrument, material or substance which, under the circumstances in which it is used, attempted to be used or threatened to be used, is readily capable of causing substantial bodily harm or death.” NRS 193.165. Knives and guns are obviously deadly weapons. Additionally, other objects, if used to inflict injury, can be classified as deadly weapons. For instance, bats, screwdrivers, rocks, sticks, bottles, and other household items can all be considered deadly weapons.