Profile for chelspires

At some point in the first act, I believe it's the first time Alex (Tom) runs up the stairs, is something intentionally knocked off to on to the floor? There's a pause as Alex looks at it and then continues, and another pause and stare before he walks off stage. I couldn't recall if he ever mentions what the item is--what is it? Based on the pace of this particular play, Tom's reaction was so well acted, but it just seemed so random. I've also considere