This might look like a Nikon AF-S 55-200mm 1:4-5.6GED LENS but it’s actually a speaker. This Portable Lens USB Speaker has a built in battery (USB chargeable) to power out your tunes for 3-4 hours per charge while you do your photography work.
There’s even a lens cover, although it’s ok if this lens gets all scratched up I suppose. If you’re a photography aficionado this is a must have. It’s the speaker that fits perfectly into your camera bag. It even has an FM radio.