Flush replacement for standard sling swivel.

I have a T1x which comes with standard sling swivels and military style flush cups. I'm using the flush cups for my sling so I have no need of the sling swivels at the moment.

Anyone have an idea of what I can replace the standard sling swivels with? I don't want to permanently fill the holes and I'd like something with an identical thread so as not prevent reinstalling the sling swivels in the future.

I was considering a basic Phillips head screw but the threads need to match.

Cut the thread off the the sling swivels, carefully cut a small slot in the end with a Dremel cutting disc, and put them back in using a small screw driver.

That's a great idea. Thanks Husky.