While in Malcom's apartment, Malcolm gets Wendy a glass of apple juice. You can see him fill up the glass and place the container in the fridge. The shot cuts to Wendy, then back to Malcolm and shows him again filling up the glass and placing the container back in the fridge.
When Harry is on the hallway landing, a gust starts to blow. In the shot as he jumps over the ivy vines on the floor, to the right of the screen you can see a hand holding a black wind machine, to simulate the gusts.