Visible crew/equipment: In the flashback scene where Jesse breaks into the Whites' house and starts pouring gasoline everywhere before Hank stops him from burning the house down, you can see the outline of a crew member exiting the right side of the dark living room at the beginning of the shot. (00:21:35)
Continuity mistake: In the car when Walt meets up with Saul and discusses "Old Yeller" Walt asks what he means and is looking at Saul. When it cuts to a close up of Walt, he's suddenly looking more straight ahead or towards the driver, only then to turn his face to Saul.
Chosen answer: I'm not sure how far you are into the show but he does eventually come up with a way to launder it (wont spoil it for you but rest assured, when he gets a lawyer the show gets much better!) and in the final season he also comes up with a way to give his children his money without the cops or the DA knowing it came from him.
The_Iceman