I recently helped the Vitamin Shoppe by creating a 3D image used in their training classes. Students were given red/cyan glasses and the image below was projected for all to study. There are a number of objects or scenarios in the image for students to identify as problems. The 3D really increased the engagement of the students making the exercise more successful.
The client had this shot above in 2D and we consulted with them to identify their best options. Shoot an all new 3D version, or convert this existing 2D image. Since the client was very happy with this 2D shot, and time and money were tight, we decided to do it as a conversion. The project was well received by the students and the client was delighted with the result.