I kind of picked Ludo's department at random, but now I start to see the potential. Besides the inspections of the shops and the international aspect of his job he also deals with smuggling right!
So I was thinking of doing a thread where he gets an anonymous tip, are there any other kind

so he goes on a stake out. This could be a small thread or a very large plot. I'll give you the two scenarios I have in mind.
small plot:
Ludo goes on a stake out alone, on the way or while staking out the place he meets someone familiar and he asks them if the want to keep him company because he thinks this tip was bogus. Then the criminal comes along but doesn't do anything illegal so the stake out ends. (sounds pretty boring but that's kind of the point, leaves more room for conversation)
this would need 3 characters.
big plot:
Ludo goes on stake out with a colleague or a friend, they encounter one or more criminals importing illegal goods. Ludo calls in the cavalry i.e. the hit wizards/witches or aurors.
this could run up to 5 or 6 characters.
Tell me what you guys think, I'm still new so I don't know how or even if you do 6 character threads and stuff.
It's just something that popped in my head.