26.1MP APS-C X-Trans BSI CMOS 4 Sensor and X-Processor 4 - UHD and DCI 4K Video Recording - Redesigned Fujinon 23mm f/2 Lens - Tilting 3.0" 1.62m-dot LCD - Film Simulation Modes (AKA Fuji recipes)
Multi purpose, to protect your lens and help cut down on the extra light. It should reduce things like lens flares.
Camera straps and mounts. How do you plan on carrying your camera?
Must haves to pair with your Fujifilm X100V. General camera gear and a few specific model suggestions.