"Scrounger" Noun, a person or being who collects discarded objects and turns them into (a) ready cash. (b) something useful - often re-purposed. -- Knitnan
Tolerance is a wonderful thing, and more of it happens on the relatively lawless edges of society than it does in the lawful middles. Law likes to build a bubble around itself and eliminate everything that exists outside of it. But edges... edges are where interesting things happen. Sometimes, it's a plummet into destruction, but other times... you get interesting flights into strange new areas of potential.
And it's the edge stations where Humans could interact with Galactic Citizens before they were accepted into Galactic Society as mostly harmless. Such as Peripatetic Matthew, a wanderer who may or may not have begun the Loyal Order of Hitchhikers, but definitely gleaned rides to a Spacer's next survivable stop along the Edge Territories. Matthew would bring a small amount of cargo to stow into odd places and introduced quite a large number of freighter captains to the concept of luggage tetris.
But that wasn't all that Peripatetic Matthew did.