On sale are 5 different USB hubs that are designed to clamp onto the monitor or desk and quite similar to the Orico one popular years ago. The adjustable bolt can clamp onto anything with thickness between 10-32mm, the hub is made from aluminum alloy and they have a USB-C port on the back for providing extra power if needed.
I personally use a couple of these on all my desks so I don't have to reach below under my desk to plug something in.
Prices below for each different variant available on the listing.
4x USB 3.0
US$8.10 (~A$12.51)3x USB 3.0, 1x USB-C
US$8.79 (~A$13.58)2x USB 3.0, 2x USB-C
US$8.92 (~A$13.78)2x USB 3.0, 1x USB-C, 1x SD/TF
US$10.10 (~A$15.60)2x USB 3.0, 1x USB-C, 1x SD/TF, 1x 3.5mm Audio
US$10.51 (~A$16.23)
How many desks do you have?