Updated
The wallet is funny because the gesture before it is so ordinary. A diner offers to pick up the check, reaches for what looks like a normal wallet, and opens it to reveal a sponge. The yellow rectangle is the object that changes the scene. It turns the offer to pay into a setup for the walk to the kitchen. The insert needs enough time and contrast for the audience to recognize the sponge before the scene moves on.
This version gives the wallet a short close-up and uses a bright kitchen sponge against darker leather. You do not have to photograph a wallet or make a prop. Bring a clear portrait for the lead and let the scene provide the objects. When you review the video, look at the reveal at the same size it will appear on a phone. A caption over the wallet or a narrow crop can hide the detail that makes the final shot make sense. Give the sponge room in the frame and leave a little space for the companion’s reaction.