The two bloody objects that are found in the nursery in Ray Bradbury’s short story “The Veldt” are a wallet and a scarf. The wallet belongs to the father of the family in the story, George Hadley. The scarf belongs to his wife, Lydia.
Although we are not explicitly told this, it appears that the Hadley children, Peter and Wendy, have in some way been pretending to have the lions kill their parents in the nursery. They might have brought their parents’ belongings into the nursery to make the nursery’s versions of their parents seem more real. Or maybe they wanted to teach the lions the scents of their parents so that they could later have the lions actually kill them.
One way or another, these two bloody items are a sort of foreshadowing. They help us to understand that something terrible is going to happen to the parents in this story.