I like my desk mats, basically a giant mousepad that stretches under your keyboard.

Havit Extended Large Gaming Mouse... https://www.amazon.com/dp/B01M18UR54?ref=ppx_pop_mob_ap_share

A good laptop stand to elevate it off the desk and open up space underneath.

AmazonBasics Laptop Stand - Black https://www.amazon.com/dp/B00WRDRRWW?ref=ppx_pop_mob_ap_share

Good set of speakers.

Logitech Multimedia 2.1 Speakers... https://www.amazon.com/dp/B00KK9481I?ref=ppx_pop_mob_ap_share

Cable management.

Alex Tech 10ft - 1/2 inch Cord... https://www.amazon.com/dp/B07FW3GTXB?ref=ppx_pop_mob_ap_share

Cable management box doubles as footrest

Anker 4-Port USB 3.0 Hub,... https://www.amazon.com/dp/B07L32B9C2?ref=ppx_pop_mob_ap_share

A good keyboard. I do a lot of CAD work, so prefer a left handed numpad which allows me to keep my right hand on my mouse

Bloody B845 Light Strike (LK) Optical Mechanical Gaming Keyboard – RGB LED Backlit – LK Blue Switch – Left Handed Keyboard https://www.amazon.com/dp/B073X996W6/ref=cm_sw_r_apan_i_SBBQ24WXGFFFE6PGYCE4

Speaking of a mouse, get an MX Master and don't think twice about anything else.

Logitech MX Master 3 Advanced Wireless Mouse, Ultrafast Scrolling, Ergonomic, 4000 DPI, Customization, USB-C, Bluetooth, USB, Apple Mac, Microsoft PC Windows, Linux, iPad - Graphite https://www.amazon.com/dp/B07S395RWD/ref=cm_sw_r_apan_i_EDK7PWYX0SREJR03FN93?_encoding=UTF8&psc=1

Lighting for that vitamin D

Miroco Light Therapy Lamp,... https://www.amazon.com/dp/B081MT6Y5B?ref=ppx_pop_mob_ap_share