This guide tells you how to make a 3DS case useful in any Nerf war.
Step 1: Clip Holder
In the section of the case with the straps, you can fit a 6 dart clip.
Step 2: Ammo Storage
You can fit 10 darts in the netted section of the case.
Step 3: Jolt Case
In the straps, you can fit a jolt with a dart, and 3 other darts.