I could see it being a sort of the characters keep bumping into each other kind of deal. Not necessarily becoming a team, but eventually going beyond casual acquaintances and whatnot, mutual friends or suchlike. 

Speaking of, I did have a random idea of just having Lucas knock on Sam's door to ask if he knows the owner of a something or other that he found on the sidewalk. If you're looking for something to have happen in your post? [@DJAtomika]