In the first level of zoom in moment 1 of Chapter 7, you can unlock Pure-Blood.
Also in the first level of zoom, you can pick up the Bowman Wright Chocolate Frog Card.
In the grass, you can collect Knotgrass.
You can also pick up Horned Slugs.
Moving onto moment 2, you can pick up a Signed Photo of Gilderoy Lockhart.
You can find a bottle of Lilac Ink.
Behind the Lilac Ink you can pick up a Peacock Quill.
Last but not least, you can pick up a Bridget Wenlock Chocolate Frog Card.