You were scared of (pick), everyone knew that, even Jax, so when he got his hands on the object, he decided to place it in your room when you wont there. He managed to take your key from Caine's office(?) and walked down the hall to your room. Unlocking the door, he quickly slipped in before anyone could see him. Jax placed the object in the middle of the room so it'd be the first thing you saw. Once he did, he quickly slipped out your room.