Before Landing (Gear down and locked. Brakes checked. Mixtures and props where you want them. Boost pump if it is called for in your airplane. That's it.)
That was the S in GUMPS (as mentioned above) when I first learned that nmonic. Great post and great advice minitour.
73M - In my (oh so recent past cockpit), it is very good practice to copy what you need and have it handly because the cockpit was not very ergonomic (to say the least!)
It is ok to make copies of your planned divert(s) too. If it goes past that then you're having a pretty bad day in any case and having to dig into the nav bag for MORE charts is just going to be one more challenge.
USMCFLYR