Atreus Palmrest "cushions" replacement?

Hi! Been super happy with my atreus + palmrest setup.

I just traveled and noticed that one of the 4 “cushion” circles on the bottom of the palmrest fell off, and am wondering if there is any guidance on finding a replacement. Is there anything I can buy to replace immediately, or will I have to do something more custom?

thanks!
Dan

You can look up felt pads, or adhesive felt pads. or search amazon

scotch felt pads