Beaded mask holders, found in Bali. I have never seen these here in Australia, but loads of people had them in Bali. It's a great way to not be touching your mask all the time or shoving it in your handbag when you eat etc. 
 
I know masks are not worn that much at the moment, but there are still a few people around who would rather be safe then sorry. 
 
All you do is clip the mask on the end with the 2 clasps. 
 
Comes in 3 colours - Gold and black/aqua and gold/ green and gold.
Again, there are only 5, so if you want one, get in quick.