When I meditate with my eyes open, looking at my bookcase and desk and the various things on it, I find it to be great practice for the kind of waking meditation
@woops mentions, i.e. walking around. Even being able to engage in activities and dialogue without losing this sense of unperturbability.
And here is where I still employ an extensive conceptual framework in conjunction with efforts at letting mental exertion come to a rest. I see my surround objects (book/DVD covers, electronics, etc) as the various advanced superstructures of energy that populate out region of spacetime with extraordinary abundance, so abundant as to let us lose track of just how singularly structured our world is.
And then I observe how my mind maps various concepts onto these objects, prompted into different thoughts and thought sequences as my eyes shift aim across the room.
And letting all of these mental invocations collapse into a single plane of mental activity, alongside whatever emotions may be activated throughout these thought sequences, allows me to better see through the phenomenal realm, to become less disposed to be swept up by it, swept up out of the lucid ataraxia I seek to sustain.