Amazon.com will offer 3D printing services that allow customers to customize and build earrings, bobble head toys and other items from third-party sellers using a new personalization option on its website. Most of the more than 200 items available on the company's new 3D printed products store, which launched on Monday, can be customized using a new feature that allows users to rotate and change the item they are viewing. Before it is printed by one of Amazon's sellers, users can customize a product like as a bobble head figure by changing its skin and eye color, hair style and outfit, Amazon said. "The customization is something we're keenly interested in," said Petra Schindler-Carter, director for Amazon marketplace sales, speaking in an interview. "We'll always look for new applications for that."