You can add dynamics to all scene objects. In this scene, a camera has been made a Rigid body and given a spherical shape to better bounce down the stairs. The other objects in the scene are set to Static bodies, apart from the cyan box on the stairs. It's a rigid body objectand its weight is very low. It will make our camera bounce down the stairs in a more interesting fashion
To make any item a dynamic object, simply add a dynamic type to it. Here we have selected a null in Layout and added a Rigid Body Bullet dynamic property to it. The Transform tab for the item allows you to create a specific size and shape for your item.