Instagram is a quite popular app for photo sharing for your iPhone. If you do enjoy share photos this way you probably have a bunch of them. If so you can also share them with your family and friends in real life. You can print them and organize one of your walls. You can do that the same way that Dawn from My Home Sweet Home did. She made a magnetic board and arranged photos on it using small magnets with the Instagram logo. In my opinion her solution is simple yet very cute.
If you want you can also check out some more solutions for organizing an inspiration wall.