I love the custom iphone cases from 
Shutterfly, but at 35 dollars each they are on the pricey side.  I found a way to replicate this look for only 4 dollars.  I purchased a clear TPU iphone case off 
ebay but you can also get it off 
amazon.  The case was only $3.18 and it was delivered within three days.  To customize the case just cut out a image using the case as a template and slip it into the case.  Couldn't be easier.  And the best part?  It's interchangeable, if you get tired of one picture just cut out another.
This would make a great present for grandparents, relatives or friends.  I'm thinking of making one for a friend who recently got married.  If you have photoshop you could create some awesome designs.
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| Custom Iphone case for less than 4 dollars. | 
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| I used printer printed pictures, but you could also develop images or even use magazine clippings or anything you wanted.
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| Trace the case template. | 
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| Cut out the image and the trace the camera opening. | 
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| Use a craft knife and cut out the opening, then slip image into case. |