(cool, another "How to leave the cockpit" thread.

)
The lights generate heat. No reason to have them at full brilliance when no one's there -- especially during the day. The cockpits are greenhouses already.
Close the shades if installed.
Deselect all the radios.
Leave the cockpit at least slightly cleaner than how you found it.
And I've never understood the whole, "Leave the seatbelts buckled across the seat." How about leaving them hanging so the next guy can put them on without sitting on them first.
Rules to live by.