The hottest "toys" on the market this holiday season are smartphones. And nobody knows this better than gadget-accessory-makers, who've pulled out all the stops to help make every smartphone the best it can be.

From custom leather cases and Bluetooth gizmos that boost your smartphone-multimedia experience, to unique charging accessories and extended battery packs, plenty of add-on delights await. I've combed online and brick-and-mortar shops for the coolest of these smartphone accessories, at the best prices.

Read on for specifics and where-to-buy information on each product. One interesting note: Time and time again, I came back to Amazon.com for the best deals. When I refer to "online prices" in the coming slides, it's mostly Amazon I'm talking about.

And if you're on a really tight budget this year--come on, who isn't?--you might want to check out our related story ""