Interesting topic, have a bunch of experiences to share:
1) When tripping on cubes, music is a must - so I'm always interacting with either my phone or a DAP. Device screens tend to get very deep, 3D-ish. Better know where your playlists are because scrolling and searching for anything specific gets tricky past certain dosages...
2) Once upon a time, when I didn't know any better, I was tripping on 14g of Trinity on top of 14g of PE out of which - Trinity definitely worked as intended... please don't ask! Anyhow - i've got to a point where I started searching online for help and how to end a trip... That was on my big screen connected to an actual PC with a keyboard. Trying to type being that high on cubes is one thing.... trying to read... well... I won't go any further. Let's just say that this was the end of my honeymoon with cubes.
3) When diving in on spice at home, I like to be running some very specific visuals on the above mentioned screen - this helps on the comedown with OEV-s and gives me something to cushion against when things aren't too interesting in the CEV realm. Clearly remember a trip where I decided that here and now I want to open a very specific clip. Thing is - I was in that very weird part of a trip where everything appeared cristal clear, except any text... so I was looking at a folder with a couple of hundreds files in it - and I had no clue which one was which.... somehow, I managed to pick the one on the first click. Got a very clear message from that one.