One word, mate - POSTERS!
I'm sure you have seen the faux travel posters that have been designed for numerous fantasy and off-world locations in the style of old-time British rail posters?
eg
These would be a license to print money. "Deep-sea ice fishing on Europa" "See Fabulous Earth - Where It All Began!" "Lovely Lave - Jewel of the Sector" etc. Commission a set of 12 artworks and the product lines are endless:
High quality 36 x 24 in posters - £25-30
18 x 12 prints in poster sets - £50 for 6
Tea-towels - £5-10
Scarves - £10-15
Glasses - £10 each or all 12 for £100
Coasters - £15 for a set of 6
Basically, anything you find in a seaside resort souvenir shop could be marketed to promote the game.
If I had the graphics talent I'd license the rights from FD and do this myself.