We're also including a ton of game screenshots with us obviously together (about 75 over the course of 2.5 years) in their own extremely organized section in Proof of Relationship (since that is how we met when I was in the United States and what we love to do together), a ton of game development and programming screenshots (since we are both game developers as a hobby, another thing we love to do together is collaborate on projects, these images of development and programming being their own section), as well as photos of us in real life, which sadly is probably going to be well below 50 since we don't really get 'picture crazy' with my cell phone other than to take photos of foods we cook together and silly stuff since we don't go outside too terribly often.
We're including a ton of stuff such as the receipt we got after buying our wedding cake, a Dairy Queen ice cream cake and also notes we took on where to stage our small wedding ceremony.
We're kind of 'unique' in this but I think we're pretty well established along with the essay. We're very tech and game oriented rather than physical, 'go here do this do that' so we have to be sure to back ourselves up with context.