Center cap compatibility

Hello.

I know there's a certain amount of compatibility with Toyota center caps across years and models, and was wondering if anyone knew what might fit the 07-10 FJ cruiser alloys.

I have a set of the 17" 6 spokes and the 16" 5 spokes, and the caps are the same between the two. Any other options?

 

BUMP ...
I would also like to know what other 6 lug center caps fit the standard 5 spoke 3rd Gen steel wheels :

 

I’d like to know if someone has identified center caps to use for the 16x7 oem spare 42601-AD030 ?
There are some posts on using other items (grease cover) as caps, but nothing i saw on a specific cap anyone found that that just works.

 

now that i have had them on for a while, i realized nothing is necessary, cap wise, … a spray with fluid film will turn black or dark and prevent rust