How to simulate physics material 2D bounce without collision?

I like the bounciness effect you get when an object with a physics material 2d with bounciness collides with another collider and I want a similar effect in my 2d game. The problem is that in my game there are no real collisions. I instead, set the objects rigidbody to kinematic and velocity to 0 when it lands on the ground using a trigger collider, and I need to keep it that way in my game. So how can I then get that bounce effect when an object lands on the ground under these circumstances?

Thanks in advance.