STOKED! Knocking sound from rear found!

[MTZI30]

I've had this knocking coming from the rear passenger side of the car for years. I've looked under it, in it, around it and nothing! Today, I go to change my brake light bulb, start taking the liner off and "knock!" I reach down under the liner and feel a piece of metal against the body, when I move it, it makes the distinctive "knock" I've been hearing this whole time! I pull it out and its the damn wheel wrench knocking against the body. I've never had a flat tire so I've never had to use it. But the sound is GONE!

Thought I've seen some other peeps having this knock so check the wheel wrench.