In the first level of zoom in Book 3 Chapter 4 Moment 1, pick up the Invisible Book of Invisibility.
In the row under it, pick up the book “Philosophy of the Mundane: Why the Muggles Prefer Not to Know”.
In moment two under the first level of zoom, pick up a tub of dead blowflies.
In the third level of zoom, pick up the Rat Tonic.
On the right, pick up Gulliver Pokeby Chocolate Frog Card.
“Mouse” over Crookshanks!
Hover over the rabbit and it turns into a hat.
There are also a few interactables in moment two like the magic rabbit and Crookshanks.