What can I do to help the hobos in my neighboorhood?

So, I met this hobo the other day, and his name was Sammy. Sammy is very sad because he lost his home due to a girl he met on Chatroulette taking his house and money. I wanna help Sammy, because he doesn't have many friends, and he needs a house so he can take care of his chameleon, Josh. What can I do to help Sammy and Josh?