In armor, I have a clip inside the helmet that holds driver's license and room key (card). No wallet, due to it being too thick.
My first set of armor had a pouch that snapped into the backplate. It held everything, wallet, watch, keys, room key. After my first use, I realize the flaw: I had to get undressed to get to it.
Cameras are getting smaller, and smaller. I plan to disguise one as a belt box on the costume.