I have a MacBook Pro m1, with external monitor, keyboard and mouse. All of these can be reused with my iPad Air m1. For desktop use I need to purchase exactly the same equipment as for the iPad. The keyboard, Nuphy air 75, can easily switch between devices, same for the Logitech mouse. And with the display plugged into the iPad using usb c, there really isn’t that big if a difference between the MacBook and iPad when using it.

The MacBook 16” is really heavy, so I mostly use it at my desk. But it’s too heavy for the couch so that is where I use my iPad.