Here are some recent purchases I made. I don't want to drill either. I've found adhesive and things like Velcro are amazing. I'm holding up some heavy shit with it. The adhesives haven't done damage removing to make changes, plus it's the bottom of the desk.. accept it's yours forever and it's office furniture and you'll feel less anxious in general.

I've had to move these and the adhesive will work again, meanwhile still industrial hold, totally insane. Hide everything in these EVEO Cable Management 96'' J... https://www.amazon.com/dp/B096QR797S

Anywhere cables need to be exposed, you can use these really well Alex Tech 10ft - 1/2 inch Cord... https://www.amazon.com/dp/B07FW3GTXB

One cable to desk and it's hidden, desk plugged into surge protector which is mounted under desk PivyCord-V Flex Chain Raceway... https://www.amazon.com/dp/B08DN2P8RH

Belkin Surge Protector w/... https://www.amazon.com/dp/B000JE9LD4?ref=ppx_pop_mob_ap_share

Got these for mounting Hue LEDs on the back and bottom of desk Command Outdoor Light Clips, Hang... https://www.amazon.com/dp/B00HCQUINY

Cool beans =)

As far as cable management - I am using a bunch of these: https://www.amazon.com/Command-Outdoor-Light-16-Clip-4-Pack/dp/B00HCQUINY

And a few other random bits and bobs under the desk, but primarily the linked command strip clips