Visible crew/equipment: When Tim and Sid call at Jacqui's house, the camera lights are reflected in the front windows.
Visible crew/equipment: After the monster catapults little Helga from the seesaw to her room and she is tucked into bed, it is possible to see the wire that was used to pull the covers up (when her parents enter the room). (01:06:25)
Visible crew/equipment: When the musketeers are in the outer fortress having breakfast a bomb (like a hand grenade) gets stuck to a piece of bread. D'Artagnan throws the bread out the window and the camera zooms in as the bomb explodes. The explosion clearly begins inside the loaf several inches from where the bomb is stuck to the bread.