Instagram combines retro looks with modern connectivity to make a truly addictive little app. Take a photo, and you can add depth to your photos with one of 18 or so filters, depending on what style you are going for; then upload your pictures to Facebook, Twitter, or other social media. Instagram can be downloaded for free through the Apple App Store.

Buy It: Free

If your kids are in the sports, Coach’s Eye is the perfect gift idea this season. Spend quality time with your kids and make them feel special. Be their coach in a fine way even if you have never coached before. This new iPhone app will enable you to record, watch and review plays. Whether it’s baseball, hockey or any other sport, you can go over with the kids on their playing techniques. Review play by play, whether it is swinging technique, shooting, free throws or kicking, so they can capitalize on their strong points and concentrate on correcting their weak points.

You can be your own coach if you let someone record your play actions while you are playing. Then replay it in the leisure of your home and identify what you should or should not be doing to improve your skills.

Buy It: $0.99 

http://www.youtube.com/watch?v=M9b_cPFBK60

Over the last little while, we’ve posted about quite a few cases and accessories for the iPhone; the Zebrawood Veil sticker (for a lack of a better word) is probably one of the most elegant add-ons for the iPhone 4.  The wooden sticker is made in Los Angeles by Killspencer and is hand-crafted from zebrawood maple wood.  Just peel the back of the sticker off and apply it to your iPhone to give it an individualized and elegant look.

Buy it: $30

“Imitation is the sincerest/greatest/best form of flattery” according to an old saying and Apple products have been imitated to death.  Their lawyers don’t think of it as flattery, but rather a pay check.  We’ll see how long it takes them to go after a Korean company called Destination Seoul for making the cute little mini Apple logo wooden speaker.

The mini speaker is hand crafted from apricot wood and measures 2.6” x 2” x 0.5” and only weighs half an ounce.  The wooden speaker is powered by a lithium-polymer batter with a five hour life; it can be recharged by plugging it into a USB port.

I’m not sure how good the quality of the sound would be due to the small size of the speaker but it probably is just as good as, if not better than the speakers on the iPod and iPhone.  Most of the buyers are going to get this as a novelty item rather than a Bose quality sound system.  The speaker not only looks cool but is also easy to carry and if it sounds decent then it is a must have for diehard Apple fans, unless they care about copyright and all that good stuff.

Buy it while you can at etsy for $29.99.

At Geek Extreme, we’ve posted about quite a few iPhone cases that give the iPhone a new look and some even give it extra functions.  We’ve seen covers that make the phones look like cameras (not covered on our site) but we’ve never seen anything like the iCamera Case by Hashy.

Not only does the iCamera Case makes the iPhone look exactly like a camera from the 90’s, it also makes the phone bulky and hard to carry in your pocket.  The back of the phone/case actually has a lens and a “film hump” that stick way out.  Of course they don’t add any functions to the phone.

At least the iCamera Case comes with a neck strap because it will be pretty hard to shove it into your pocket and that “film hump” thing acts like a stand for the phone.  So if you are after that retro look and don’t mind wearing the iPhone around your neck, then this is the case for you.  Personally I like to make things less complicated and this just doesn’t do it for me.

Buy it: ???

If you’re into cars, you’ll love the iPhone 4 Gasket Brushed Aluminum cases.  The designs for the gasket iPhone 4 cases are inspired by the shape of head gaskets on performance automobiles and they not only protect your phones but also give them a very unique look.

The exterior of the gasket iPhone 4 cases are made out of real brushed aluminum and the inner parts are lined with suede lining providing maximum protection from scratches and minor falls.  The iPhone 4 Gasket Brushed Aluminum cases come in five colors (aluminum silver, vintage gold, modern bronze, titanium gray and jet black) and come with a set of front and back clear screen protective film, a squeegee for film application, and a microfiber cloth.

Buy it: $29.99

We’ve shown you quite a few iPhone cases over the last few weeks, so far all of these cases have had two purposes: to protect your phone and make it look different from everyone else’s’ phones.  The Opena iPhone case now adds a third function to the case; it comes with actual bottle opener.

The Opena iPhone case works like a normal case and helps protect your phone with a hard-shell case but when it’s time for a drink, just slide the back part and you’ve got an opener.  As the video says “if you don’t have an iPhone then you don’t have an Opena attached to your iPhone.  And if you don’t have an Opena, then you can’t open beers with your iPhone… Well, if you don’t have an Opena, then you probably don’t have an iPhone either.” Too true…

The Opena iPhone case is now available for pre-order at $39.95.

http://www.youtube.com/watch?v=aLYwPX1o1fE

Recently we have been posting about quite a few different cases for the iPhone 4 to help you stand apart from the crowd, however, all of those cases were “as is” with no customization options.  The Neostitch iPhone 4 Case on the other hand lets your inner artist out by allowing you to cross-stitch any type of design you wand and ensuring your iPhone case is one of a kind.

The Neostitch iPhone 4 Case is created by Korea based Connect Design and it comes in six different color cases (pink, white, orange, green, blue, and black).  Inside each case there are a few different colors of thread, 2 needles, and a few patterns for inspiration.  The kit can by yours for $18.00 each.

With all the problems we heard about the iPhone 4’s connection issues with the so called “Death Grip”, one would wonder why there would be a metal case on the market made out of metal. But here we are, with one tough and expensive ($300) Case-Mate Titanium iPhone case.

The beautiful case is machined from a single piece of titanium which provides strength and a modern sleek look. Titanium, which can be found in luxury vehicles and jet engines, adds durability and chances are, the case will outlive the iPhone 4. A laser etched logo puts a nice finishing touch to the case.  The kit also comes with a tool set as minor assembly is required as well as buttons for volume are included.

Check out the videos below including the video on how to assemble the case.

http://www.youtube.com/watch?v=otwVpjBVogI

http://www.youtube.com/watch?v=VZdGtKB6l4M

The Old-School Calculator iPhone 4 case brings back a lot of memories.  I remember I had a calculator just like it, and for you kids that don’t know what I’m talking about, go through some of your parents’ old stuff, you might find one and see how cool those calculators were.

The case looks pretty realistic from the pictures with all the major keys that we needed in the good old days.  The “calculator” display window shows the digits “07734” and of course that turned upside down spells “hello”, which was one of the coolest tricks back in the day.

So go ahead and order one, it’s one of the cheapest ways to stroll down memory lane and protect one of the coolest gadgets available in these modern times.  Amazon: $8.95 or at Prepetual Kid: $11.99.