Play Among the Stars, and Come Aboard the Thrasymachus

Play Among the Stars, and Come Aboard the Thrasymachus was a brochure advertising the services of the Solaris World Holidays company's space cruise ship Thrasymachus.

Amy Pond and Rory Williams found the brochure at a travel agent's on Drago 14 in 2698; it already featured their own pictures as the sources of a glowing testimonial, seemingly coming from their personal future. (PROSE: Honeymoon Horrors)

Behind the scenes
The brochure contains pictures of Amy and Rory, and is found in the 27th century whereas the actual cruise as depicted in A Christmas Carol took place in the 44th century. The implication is that the Eleventh Doctor planted the brochure from the future for Amy and Rory to find, fearing that they would reject an explicit suggestion from him. However, this is never confirmed explicitly in the story.

A full facsimile of the brochure was included as part of Honeymoon Horrors in The Brilliant Book 2012.