Took You Long Enough
You probably know that photos play a huge role in Tony Stark’s life. He was busy taking pictures with an unnamed soldier in Iron Man just moments before the terrorists caught him. In Endgame, we see a photo of himself and Peter Parker next to an upside-down diploma, which would be the key to his time traveling problem.

But there’s another photograph that’s just downright awesome. In Iron Man 2, Tony takes a picture with Pepper in Monaco. At the end of The Avengers, we see the developed photograph of the two of them together in Tony’s office. Took him long enough to get it developed.