I had a squiz through the Game Ideas Game at Orange-MC, and quite liked this one:
From an idea by one of the Minecraft crew at Mojang:
Epic Job Titles: Fireman, policeman, accountant. These are bland job titles. Why not be an BATTLER OF THE INFERNO instead?
Shall we give that a go?

[Simons] Yep.

I have just been out to see Comet Lovejoy.

(Raak) Did you see it? Optical aid? They've never interested me much - I prefer looking at the planets.

Yes, with binoculars. No chance of naked eye with the Moon so close. Even with binoculars, it was just a faint fuzzy blob, no tail visible. I'm assuming it was Lovejoy and not some boring nebula, as it was in the right general area.