Simple tool that displays all of the bones that a particular mesh is bound to - useful for debugging skin weighting etc

BoneDebug.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[ExecuteInEditMode]
public class BoneDebug : MonoBehaviour
{
    SkinnedMeshRenderer skm;

    public List<Transform> bones = new List<Transform>();

    public void OnEnable()
    {
        Init();
    }

    [ContextMenu("Refresh Bone Debug")]
    public void Init()
    {
        skm = GetComponent<SkinnedMeshRenderer>();
        if (skm != null)
        {
            var boneList = skm.bones;
            foreach (var bone in boneList)
            {
                bones.Add(bone);
            }
        }
    }
}