Gizmos.DrawIcon

Description

Draw an icon at a position in the Scene view.

The image filename for the icon is specified with the name parameter while the center parameter denotes the location of the icon in world space and the allowScaling parameter determines if the icon is allowed to be scaled. The image file should be placed in the Assets/Gizmos folder.

DrawIcon can be used to allow important objects in your game to be selected quickly.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void OnDrawGizmos()
    {
        // Draws the Light bulb icon at position of the object.
        // Because we draw it inside OnDrawGizmos the icon is also pickable
        // in the scene view.

        Gizmos.DrawIcon(transform.position, "Light Gizmo.tiff", true);
    }
}