Process
We based our work on a current Kellogg's Australian campaign guidelines (unstoppable). We adapted the current branding and maintain the same look and feel for custom elements (UI). The idea was to keep the over whole aspect clean and uncluttered, all the design elements tending to highlight the content. Finally, the design had obviously to support the UX (not the other way around).
The user experience was divided into 3 parts: the Hub (general interface where you can select the video and access the different options), the VR mode (interaction when the phone is inside the headset) and the "how to" mode (interface to quickly and simply understand how to build the headset or how to interact with the app in VR mode). We based our work on google headset guidelines, using a mix of traditional tactile gestures combine with head gestures and time-based triggers.
Results
We tested the cereal box cutout and mobile app with kids. The results were really encouraging. 8 out 10 kids could build the headset and interact with the app.