I needs props for explaining the conflict of A Boy at War by Harry Mazer and two other props for things that happen within the story. I have already come up with a map of Hawaii, showing Honolulu, to represent the setting; made a Japanese plane from popsicle sticks and having black-colored marshmallows bomb my ship; and made two folders for the main characters: Adam (the folder shows things about Adam, like a picture of a lieutenant from Pearl Harbor, a picture of the USS Arizona, a picture of Adam from the cover, and a picture of the attack on Pearl Harbor) and Davi Mori (I put in his folder four pictures displaying the sentiment of that time period, such as one picture showing a woman pointing to a sign saying "Japs Keep Moving This Is a White Man's Neighborhood," a picture of a Japanese family with small bags of luggage wearing tags, and a picture of an internment camp, to get the idea of why Adam's father did not want him around Davi). What else can I do? There need to be seven props total.

Considering Adam was on a rowboat, fishing, when he watched the bombing of the USS Arizona, which his father was on, I would have a rowboat as one of the props. Since you are already making a plane from popsicle sticks, maybe you can make a rowboat (don't forget the oars to show that it is a rowboat) and have Adam sitting in it, holding a fishing rod, to demonstrate the moment when he sees the plane crash into the ship he knows his dad is on.
As for the conflict, I would focus on the fact that Adam is a child soldier at this point. At such a young age, and when his country needs him most, to be mistaken for an enlisted sailor to search for survivors—and knowing that it is his own father he could end up finding—is horrific. The major conflict is that this boy is being treated like a man and saving these men, all while being a scared kid trying to find out if his dad survived. You could do something like displaying a teddy bear (to represent Adam's childhood) with a sailor hat on it (to represent his new role). By juxtaposing the two items, you are creating a picture of what Adam is and what he must be.