If you use a Zoom H4n to track your audio, you should check out the Auray Zoom H4n Complete Accessories Kit from B&H. It includes a custom windbuster to reduce noise and plosives, a wired remote control, a hot shoe to 1/4"-20 male post adapter, a line-to-mic attenuator cable, a 16GB SD card, and four rechargeable AA batteries with a charger.
The windbuster provides up to 30 dB of wind-noise reduction and also reduced vocal plosives while protecting your H4n from moisture and dirt. The hot shoe adapter allows you to mount the H4n right to your DSLR or camcorder, while the included line-to-mic attenuator cable lets you connect the line output of the recorder to the lower level mic input of your camera, creating a backup recording that can be used to help sync your audio to video in post.
The kit also has you covered for power and memory. The included 16GB SD card provides ample storage while the battery charger and four AA batteries can keep your H4n powered.