Say you had a week to spend in a photogenic city like New Orleans, and wanted to rent a "special" lens or accessory for the trip. Intended use would be for available-light shots, day and night. What would you rent, assuming you already owned the following: Nikon D90, Tokina 11-16 f/2.8, Nikon 35mm f/1.8, Nikon 17-55 f/3.5-5.6 VR kit lens, Nikon 55-200 f/4-5.6 VR kit lens, IR shutter release and a carbon-fiber tripod Would you rent a medium telephoto like the Nikon 70-200 f/2.8 VR? How about a fast macro such as the Nikon 105mm f/2.8G VR? Maybe a specialty lens to experiment with, such as a Lensbaby Composer? Or would you rent some other lens or non-lens accessory? Just trying to get some ideas as this trip's coming up for me soon, and I'm curious what others would put in their bag for an "assignment" like this. Ultimately I have adequate glass to not need to rent anything at all if I choose not to, so there's a bit of a thought experiment element to this as well.