I too live alone and sometimes tend to use my house as one big bedroom, leaving things where they obviously don't belong or have any use. Having somewhere for "everything" to go is required in order for "everything" to be organized. You could build shelf units or racks to hold plastic bins in lieu of built-in storage which I see you have little of (me too). I added wire shelves to closets scaled around duplicate sized lidded bins for seasonal storage. If there is not somewhere for something to go, I give it thorough consideration as to whether I want it bad enough to make the kitchen table its permanent location in my life. Usually the "thing" will lose and a usable kitchen table will win. That being said, I regularly cycle through clean phases and phases where the only reason I know that I
have a kitchen table is that all that "stuff"
can't be levitating.