A mini stepper is a compact, portable exercise machine that simulates stair climbing to provide a low-impact cardiovascular workout. It typically consists of two small foot pedals that move up and down, allowing the user to step in place. Some models include resistance bands for an upper-body workout as well. Mini steppers are popular for home use because they are space-efficient, easy to store, and offer an effective way to strengthen the lower body, improve stamina, and burn calories. They're ideal for small spaces and can be used while watching TV or working at a desk.