He knocked chairs over throughout the house and helped himself to one of Rian's cookies and a glass of milk. (Notice it turned green after he drank from the glass)
He used Jessie's toothbrush.
He didn't flush after using the potty- gross!
He also left a trail of toilet paper throughout the upstairs hallway!
The trap had been deployed, but alas- no leprechaun inside! At least as a consolation, he scattered gold chocolate coins throughout the house....... Better luck next year....