It's probably not great for my wrists, but I particularly like the location of the built-in trackpad on my MacBook. So instead of raising the laptop in a stand

It's probably not great for my wrists, but I particularly like the location of the built-in trackpad on my MacBook. So instead of raising the laptop in a stand and getting an external keyboard and mouse, I use an external display (24" 4K) at an ergonomic height/distance and keep the built-in monitor as a secondary screen (for example, running the iOS simulator on the MacBook screen and Xcode full screen on the external display). I arrange the screens so the built-in display is below the external one (i.e. the same arrangement as they are physically) and keep my dock on the left of the main display.