If you're looking for a way to block off stairs without using a baby gate, there are a few options. One is to use furniture to create a barrier. This could involve placing a couch or other piece of furniture at the bottom of the stairs. Another option is to use baby gates that mount to the wall. These gates are more permanent and can be opened and closed as needed. Finally, you could use a baby gate with an extra-wide base that spans the entire width of the stairs.