For this challenge, you have to search the following items:
You have to search all three items in a single match.
- Chests and Ammo Boxes are easy to find since they can literally be found in almost every house.
- Supply Drops drop inside the area of the Storm Eye so the best chance to find one is towards the end of the game when the Storm Eye is smallest. By that time you should already have searched a Chest and Ammo Box.