Unity: Make your unique data accessible globally w/o having to link it, by using a 'ScriptableObjectSingleton'

ScriptableObjectSingleton.cs

using UnityEngine;

public class ScriptableObjectSingleton<T> : ScriptableObject where T : ScriptableObject
{
    static T m_Instance = null;
    public static T Instance
    {
        get
        {
            if (m_Instance == null)
            {
                var found = Resources.LoadAll<T>("");

                Debug.AssertFormat(found.Length != 0,
                    "Can't find any resource of type '{0}'. Make sure you have one in a 'Resources' folder.",
                    typeof(T));

                Debug.AssertFormat(found.Length <= 1,
                    "Could find {0} resources of type '{1}'. Make sure you have only one in your project!",
                    found.Length, typeof(T));

                m_Instance = found[0];
            }
            return m_Instance;
        }
    }

    protected virtual void OnEnable()
    {
        Debug.AssertFormat(m_Instance == null, "Trying to instantiate another {0}, which is forbidden.", typeof(T));
    }
}


// ====================
// SAMPLES
// ====================

/*
// CLASS HOLDING YOUR GLOBAL DATA
[CreateAssetMenu]
public class GlobalData : ScriptableObjectSingleton<GlobalData>
{
    [Range(0f, 1f)]
    public float MyValue = 0.5f;
    public Texture MyTexture = null;
}
*/

/*
// USAGE
public class Usage : MonoBehaviour
{	
    void OnGUI ()
    {
        // Usage Example
        var value = GlobalData.Instance.MyValue;
        var texture = GlobalData.Instance.MyTexture;
        var rect = Camera.main.pixelRect;
        rect.width *= value;
        rect.height *= value;
        GUI.DrawTexture(rect, texture);
    }
}
*/