Chances are, you're going to want a few accessories for your shiny new (or not so new) PS Vita. There are, of course, a few official accessories out from Sony (as well as officially licensed items from Rocketfish), but sometimes you can save a bit of money or get a more specific set of functions, from third-party options. Nyko has been making console accessories for some time, and they've added a line of PS Vita items. Here's what they're offering so far (please note: I have not used or even handled any of these at the time of writing, so I can't say whether or not they're any good). I'll be adding reviews of third-party accessories from time to time, so check back and see what's new.
Nyko's game case isn't all that different from the official Sony PS Vita case, except for a couple of factors. One, it's blue instead of grey. Two, it holds ten games instead of eight. And three, it comes with removable inserts that let you convert one or two of the game slots into slots for two memory cards, allowing you to have as many as four memory cards stored (which is two more than the official Sony case). MSRP is $4.99 USD.
This is Nyko's equivalent to the official PS Vita Starter Kit. It comes with a variety of basic items you might want when you first buy a PS Vita. The biggest item is a custom-shaped hard case with a moulded top to fit the Vita's controls. Also included are a USB cable, AC adaptor, and car charger, plus a cleaning cloth. Everything is in shades of black and grey to match the handheld itself. Please note that unlike the official Starter Kit, this kit does not include a memory card, so you'll still have to buy that separately (currently only Sony is manufacturing PS Vita memory cards). MSRP is $29.99 USD.
This accessory serves two functions: to make holding on to the PS Vita easier, and to extend the handheld's battery life (something like the Blue Raven Extended Battery for PSP). The shape of the Power Grip turns the PS Vita into something resembling a PS3 Dual Shock controller, presumably making it more comfortable to hold for long play sessions. Players with big hands might find it helps reduce hand strain. The original design included fold-away grips to reduce the bulk of the Power Grip, but this feature seems to have been removed in the final version. It is really easy to snap the unit on to a PS Vita, so presumably it should be easy to take off, too. The Power Grip also has a built-in rechargeable battery, which Nyko says will triple your playing time. It charges via the PS Vita's own charging cable, so you don't have to keep track of an extra cord. MSRP is $24.99 USD.
This basic charging kit includes a 6-foot USB cable, an AC adaptor, and a car adapter, so you can plug your PS Vita in to charge just about anywhere. If you lose or damage your original charging cable, this might be an option for replacing it, or if you want to buy the Speaker Stand (below) and leave it plugged in all the time, you might need a second cable. MSRP is $19.99 USD.
The Speaker Stand is both a charging dock and a pair of external speakers. It charges with the PS Vita's own cable, so you won't have an extra cable to deal with, and it holds the handheld at a slight angle to make watching movies and other videos easier. The dock also includes a line-in, so you can run your iPod, smart phone or other audio device through the powered speakers. MSRP is $29.99.