Roof rail accessory - tie downs?

Has anyone found a tie down eye accessory (like the 4 OEM ones Toyota includes for the bed rails) that fit on the built-in cab roof rails? I have a crew cab and would like to be able to tie in a canvas cargo carrier and other soft items directly to the top- no need for a rack system as the bags are padded underneath.

I'm also looking for a similar set to fit on my Yakima rails on my shell.

Thanks!

Update- making my own, will post some pics soon.

 

like these?

 

Yeah- forgot about this post, went ahead and made my own and wrote about how I did it on another post. This ended up better than I thought, and because it uses two anchors per tiedown (using tiedown hardware rated at 1600 lbs each), it's very secure and won't pull out of the rail (the rail will probably fail first, but hey, anyone willing to lift and put that much weight up there is awesome).

Here's the link if anyone is interested:https://www.tacomaworld.com/threads...-3rd-gen-today.399305/page-3276#post-15996693