Here's one I'm building and using. I tweak the order of items after each flight.
Interested to see what others are using. Unfortunately it doesn't let me attach a file, so none of the warning light diagrams I include in the checklist are shown here.
Checklists
Before leaving the house:
Verify P2V batteries are charged
Verify WiFi extender is charged
Verify batteries in remote are fresh
Verify additional set of batteries along for controller
Verify micro-SD card is in P2V camera
Verify takeoff platform is in vehicle
Pack toolbox, including prop guards and water landing system
Pre-flight checklist (in the field):
Check P2V battery for charge
Verify S1 and S2 are in the up position
Turn controller ON
Turn WiFi extender ON, verify green light
Verify WiFi extender is pointing at the P2V (directional antenna!)
Verify controller antenna is not pointing at the P2V (not a directional antenna!), but pointing straight up
Inspect propellers for any damage
Install propellers
Insert battery into P2V
Turn P2V ON
Check lights on bottom of P2V, verify ready for GPS flight (slow blinking green)
(If compass calibration is needed) Flick the S1 switch ten times to connect
Turn P2V camera ON, set to "WIFI ON" position
Turn iPhone brightness up to full
Close all extra applications to save battery drain
Attach iPhone to P2V WiFi network (iPhone Settings)
Launch DJI Vision App
Verify Micro-SD card is formatted
Test camera functionality: tilt, take a photo
Take a photo of contact information
Mount iPhone to controller
Execute Combination Stick Command (CSC): Both sticks down and in to start the motors
Left stick all the way down for 3-5 seconds to stop the motors