Earlier I used to have a massive one in the bedroom, because my brain starts kicking in its last ounce of ideas and gotchas just as I'm falling asleep. My wife soon got rid of that and now I have it in my study room.
I love pen/paper, whiteboards, and writing.
An issue with both notebooks and computers is that once I write/draw something, I don’t have the discipline to revisit. Whereas a whiteboard is always in view and I can reorganise it or add to while going about day to day activities.
The only drawback I’m seeing is the more I use it, the more indispensable I find it.
I don’t have one, or a good spot for one in my home office. But for a few years I’ve used the notebook linked above.
I find it focuses the mind just to get my butt out of the office chair and go stand before the blackboard when I confront a thorny problem. It us very likely good for the body as well.
However, I put pen & paper above whiteboards so, I'm not missing it as I guessed at first.
Especially after COVID restrictions went into effect.