In our tutorial Alan showed us this animation 'Logorama' which is about a world made from well known logos. I couldn't find the English one but it's more about the visuals anyway. He suggested that maybe we could make our factory environment from the shapes of icons that are found on cardboard boxes. This would mean that it would have a really unique style and that Will's cardboard box characters would fit in really well with that environment.
Here's some icons that I've found that may be helpful: