Continuity mistake: Kevin crashes his bike into some trash cans near the end of the film. When he is shown again, the trash cans and his bike change position. The tree shadows seem to disappear as well. (01:19:04)

Visible crew/equipment: When Kevin crashes his bike into the trash cans near the end, as he screams, "Figglehorn!", a small part of the camera's shadow can be seen at the bottom of the screen. Then, when the camera tilts downwards as Kevin says, "Mommy," it becomes more visible. (01:19:07)
Suggested correction: I rewatched this scene, and I'm not quite sure about this one. The shadow doesn't seem to move at all when the camera does, so perhaps I was wrong here. It could be a shadow of some other equipment for all I know, or some other sort of object entirely, but it's unclear what it is to me. Maybe it's not a camera shadow.
Continuity mistake: At the restaurant, when Bertha is taking the family's order, the way she holds the notepad constantly changes between cuts. (00:31:46 - 00:32:14)
Continuity mistake: At the restaurant, when Bertha goes to the kitchen and speaks to Fred, the way Fred holds the sock constantly changes between cuts. (00:30:59)
Continuity mistake: At the restaurant, when Bertha is taking Fred's mum and Mr. Devlin's order, the way she holds the notepad and the pen constantly changes between cuts. (00:29:40 - 00:30:45)

Visible crew/equipment: When Fred and Bertha are walking together near the end, when Fred says, "I don't really think there's a future there," and Bertha replies with, "No?" the film crew is reflected in Bertha's sunglasses. (01:18:46)
Visible crew/equipment: After Fred dreams about the wrestling match, it cuts to a scene at the school. When the camera moves over to Fred and Bertha, a light shadow of the camera can be seen moving on the brick wall. (00:39:42)