To get the compass, go to the crashed scout bus. The compass will be under a child's skeleton and other pre-War belongings. However, the compass is seen to be long-since broken, with the possibility to repair it with a Repair skill of 30 available, or with a nearby compass sensor module just beside the compass.
To get the Li'l Scout lunchboxes, head to the Zion General Store, and collect all five of them scattered across the store. One can be found inside a crate/box on the floor on the left side of the shop. Another is inside a broken metal cabinet at the back of the shop, where it is partly hidden behind a broom, which may need to be moved in order to pick up the lunchbox. Two are on the counter on the right side of the shop. The last one is inside the locked desk at the back of the shop. A Lockpick skill of 50 is needed to open the desk without a key. There are two keys for the desk, one is in a nearby toolbox, and one is in a cash register.
To get the medical supply kit, go to the Zion Ranger station. The Zion Ranger station is to the north-west of Cueva Guarache, which is just north of the General Store. It's on a table in the back of the Ranger station. The medical kit is damaged, and will need to either be salvaged with a Medicine skill of 30 or above, or to replace the contaminated parts, or sterilize it with alcohol.