I've worked in the Point of Purchase industry for several years, as well as provide consulting services on interactive (video game) projects.
The range of clients on the point-of-purchase design side of my career has included many large clients, including Mazda, Hyundai, Triumph Motorcycles, Subaru, Chrysler MOPAR, Microsoft, Sony Interactive, Hasbro, Disney and Dell.
This has included everything from providing hand-renderings to the more common CG renderings, to even experimental technologies such as interactive CAVE environment development (virtual product and retail-space prototyping). This is a newer form of product development not yet employed by a vast majority of design houses, but essentially means creating an interactive environment (like a game) in virtual space to convey a new design in real-time. This forward-thinking innovation is something I have extensive experience with and enjoy providing assets for.