Thanks! Pretty cheap off Amazon.

Rannb Square Cable Grommet Metal Wire Hole Cover for Computer Desk Table Black 80mm x 80mm - Pack of 2 https://www.amazon.com/dp/B081V4SC2V/ref=cm_sw_r_cp_api_i_5GS0YF2XEZWA7CTH168P?_encoding=UTF8&psc=1