Wheel center cap retaining clip

I bought new tires yesterday for my truck and the service tech pointed out that one of my center caps is missing the wire ring that puts tension on the center cap to hold it in the wheel.

Has any one found a place to purchase one of these. I really don't want to purchase a whole new cap as nothing is wrong with it other than that missing clip.

Internet pic of the cap/clip in question. These are off the Baja style rims.

 

Unfortunately it's not a separate part.

 

I was afraid of that.


I wonder if I can rig it somehow.

 

Fixt! I used a piece of handle from an old 5 gallon bucket, but a metal clothes hanger works too as long as it has a little spring in it to put tension on the cap/rim.