Idea
Deco...with a bit of bonus, like the carpets that give the MiB, Treasure Map, or seed.
To be sold on the website.
Have a contest for players to design deco items that could be put in the game. Can be either the player's come up with the whole idea, or the Devs give a starting point (example: design a deco item that will give 5 items for ship combat per day)...let players design the item (Devs would have to give specifications for the artwork they would need).
Players submit their artwork.
Devs make a decision (or could even do an ingame poll at the startup screen (1x per account)
Winners item is created in game and available through the store (and I would suggest the winner be given a free copy (perhaps with a specially titles piece)
If done properly, all that woul dbe needed would be the coding, which is already available from the other items in the game which have the same function, and the players would do at least some of the artwork work themselves.
BONUS: We players would have more impact on our game...at least in a sense.