Right now I'm in the middle of a campaign for my local group and they all just hit level 3 after finally escaping the Lost Pyramid on the Purple Planet. I basically took B4: the Lost City and molded it into a Purple Planet adventure. At first I was just subbing kith for the various factions but very quickly I took the whole thing in my own direction and abandoned most of the content of B4 and most of the Purple Planet material. I used B4's maps and invented a death orm cult lead by a half-kith-half-human priestess (with no actual powers) who the players slew in the last adventure.
The orm they worshiped was a well. It looked like a well, anyway. It's mouth was the ring and its gullet the shaft. It required greenstones to animate and upon animation it could potentially be controlled by a powerful enough wizard making a good enough spellcheck.
The party wizard, who is well known for hiding and not casting spells, managed to gain control of the orm after replacing the last greenstone. The orm turned out to be the mysterious "Ship of Stars" and could navigate the astral plane, taking the PCs as passengers. Thus they were able to make it home.
Upon reaching home the orm was in its death throes, being an ancient and weakened worm. But the wizard scored a nat 20 on a check to regain full control and managed to steer the dying beast to the ground without the DC 15 Ref saves I was going to require to avoid the 6d6 points of damage from the inevitable crash.
Good game. Fun times. DCC is a blast to run.