For anti-collision benefits, the use of landing lights during daylight is very effective.
Why not go the whole hog? Give the window seat passengers high powered LED flashlights in their seat nets and below 10,000 ft get them to shine the lights through their nearest window. The whole aircraft is then lit up like a Christmas Tree. Turn on the wing de-ice illumination and wheel well lights while you are there. Cockpit overhead lights could be turned right up and even the moveable map light could be turned to focus outside the side windows.
All these are splendid ideas to enhance collision avoidance and if explained to the passengers as part of the safety briefing I am sure they would be willing participants
