I always get my stuff out of the cockpit while pax deplane - so the next crew can get in there (especially when late.)

Then there's the guys that leave all their stuff while cleaning the back. And others that barge in with bags while we're still sitting there packing up.

Or my favorite - the non rev senior CA in the back that waits for MY (sorry Whitehammer) CA to go to the lav (while boarding) then comes up and starts throwing switches. Yeah, I'm typed I got this. What do you need? Are you on the release? We'll ask you to sit in the jumpseat and move the thrust levers for us if we lose all hydraulics and have no flight controls. Until then could you put the temp switch back where it was and go sit down?