Toggling visibility of geometry with a keyboard press

What is the simplest way to toggle on and off the visibility of a piece of geometry in a scene via a keyboard press? Ideally, press it once for on, and once more for off.

My object's name is "Object_1".

Scripting newbie, so any help you can give would be super helpful.

 

Can you attach the script directly to the mesh renderer?

Code (csharp):

1. /// Toggle renderer on this.gameObject when key is pressed down.
2. public class ToggleRenderer : MonoBehaviour
3. {
4.   void Update()
5.   {
6.     if (Input.anyKeyDown)
7.       renderer.enabled = !renderer.enabled;
8.   }
9. }