Filter stack on my go-to EDC setup on my Nikon outfit. . I also reverse fit the sun hood to save space, but so it is on hand if needed.
UV + CPL
To continue the section of what kit to carry, use or leave behind, one essential accessory to have for any of your lenses is a good set of filters. Not many, just a couple of types. .
Firstly to protect the glass a plain UV filter is a good start. It will not make any major difference to the image, just stop the glass from getting damaged. Whenever I buy a new lens I always buy a UV to go on it, and it rarely gets taken off other than during a cleaning session.
The next filter is a circular polarizer or CPL. Just like polarized sun glasses a CPL filter will cut out glare from the sun usually hitting a glass or water surface at an angle. .
If I need to punch through the glare on a window and capture an image of the subject the other side of the glass then a CPL is the tool for the job. .
I have used this Hoya filter as an example. I am not promoting Hoya in any way, but I do use them. A good filter at a reasonable price, other brands are available.
I want to tell you want works for me out on a shoot or surveillance job, what hasn't worked and what marketing hype you can ignore from those camera manufacturers and resellers.