Dive summary: 

• Brands are increasingly adopting 3D printer technology as a marketing tool; notable examples include Coca-Cola, Nokia, Volvo and eBay. [see all brands at AdAge]
• Coca-Cola recently ran a campaign in Israel asking consumers to create digital mini-versions of themselves via a mobile app; a handful of participants then won a chance to go to a Coca-Cola factory where a 3D printer created real-life miniature versions of themselves. 
• As part of the Nokia 3D Printing Community Project, Nokia made a 3D printing kit available for consumers to customize their own phone covers. 

From the article: 

"Clients are incorporating 3D printing into their branding efforts in various ways, some fun and gimmicky and some quite useful. For example, on one end of the spectrum we recently saw an effort out of Israel for Coca-Cola that used 3D printing in a contest that created consumer mini-me's. On the other end was a Belgian insurance brand that leveraged the technology to solve one of its customers' most annoying problems."