At around 39:15, when Chase has the argument with House, he leaves the office holding the bottom of the papers he just printed against the side of the crutch, but after he turns the corner he is holding the top of the papers in front of the crutch.
When Chase arrives on the balcony to talk to House (approx 10:05), House is filling up and holding a purple balloon and places the Soda bottle on the bin behind him. At 10:26, even though House hasn't moved, he's back holding the Soda bottle and filling up an orange balloon.
Chase scrubs in preparation to operate on Moira's dissection, against the advice of all but House. After he finishes scrubbing, Chase touches the OR door with his hand, rather than shouldering it open as he does in every other scene where he's just finished scrubbing, but before a scrub nurse has put the gown and gloves on him.