While my main focus was on writing and creating paper mechanics, I enjoyed experimenting with new technology like sound, lights and battery-operated motors. To help the planning team envision an idea, I would make a rough mock-up of a funny concept. Then I made a video of the movement and added a scratch track using After Effects.
The engineers said we could use motors with pivot points and synchronize sound to the action. Here's an idea of mine that became one of the top sellers in Father's Day.
The first is my original mock-up. The second is the finished printed card.