My quirks...hmm...
Well, I do the 'enter hangar' thing myself. Something peaceful about it? I suppose a sense of 'closure' for a gaming session. If I'm in space, I very rarely remain there. Particularly in the black. I will keep jumping/scanning until I find a landable planet, land, and then log out. Something in my head says it would be hard to sleep to the itinerant noises of a ship in space as opposed to one sat on terra firma.
I love extra switches and bells and whistles in simulators, always have, so I prolifically use my external lamps and night vision even when it isn't needed. In the SRV, I use the headlamps on low during low-light, high on the dark side, and off during daytime. If I'm doing a covert scan mission of some type, I kill the lights and only use night-vision / standard vision in the SRV and keep the lights off. Nevermind my SRV uses a glowing paintjob!
I wait until IFO or whichever flight control is speaking to finish speaking before I request docking. This has led to many fines as I get too close to the toaster rack while being 'polite' and not interrupting them. I've gotten to where I intentionally come at an angle to stations where I have more distance so they have more time to speak. Planetary stations, I come in at a lower angle so there is more flight time for the same reason.
I only explore in fully equipped (and armed) ships. This leads to obvious losses in jump range (especially in a Corvette) but has also allowed me to take on pirates interdicting me on the way home. Nothing is quite as satisfying as picking a fight in a DBX while carrying several million in data, or absolutely melting hostiles at a nav beacon and adding some bounties to that data before I tuck in for the session.
One of the reasons I love my DBX so much is that, with so many slots, there's lots to fiddle with. Like the headlamps, I'll often 'power down' almost all systems when I log off when in the black. When I log back on, I sometimes turn the 'flight check' back on. Gives a sense of preparation for another round of many jumps and potential near misses with stars while ogling GalNet. I very much wish the game had more of these 'not necessary but immersive' features. It's what makes a simulator so fun!