In a remarkable twist of fate, the iPhone 4 is only a tad smaller than a cassette tape. Just imagine the possibilities! ...Well, at least ThinkGeek has. The Standing Ovation iPhone 4 Case ($24.99) combines a silicone case that still provides access to all controls on your iPhone -- but it also comes with a clear plastic jewel case in case you want to prop up your phone for a very tiny concert. GET IT: ThinkGeek.com.