"... My laptop is all I need to work from pretty much anywhere in my house." - @mike
Turning all of the house into office is a terrible, horrible, no good, very bad idea in my opinion. You will leave no place for yourself to escape.
You need a designated place for your work and only work from that place, never do anything else on that point. If your child comes to ask you a question, switch to another place, answer child's question, then return to your "work place".
Don't mix home and work.
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