The ExpoDisc (77mm) Nikon Flash pretty nice

pretty nice

The Nikon 70-210mm f4 AF Nikkor is a well built telephoto zoom lens for Nikon F mount cameras

The Gizmon Wtulens is

The Nikon 18-300mm f3

or anything else that calls for a short telephoto

The ExpoDisc (77mm) Nikon Flash pretty niceThe ExpoDisc is a clip on (or hold in front of) diffuser designed to facilitate setting custom white balance. Rather than hauling around a gray card, or trying to find a plain white surface, or hoping that your camera guesses correctly, you can toss this in front of your lens and lock in an accurate custom white balance in seconds. Bonus: if you actually use this on a lens with a 77mm filter thread, it can replace your lenscap. Yeah, its just a fancy