diff --git a/README.md b/README.md
index 0621a6f..7f7c1fb 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,15 @@
 - Head of Programming Support: Vince
 - Head of Inconvenience: Charlie
 - Head of Marketing: Raf
-- Head of Legal Support: Ilia
\ No newline at end of file
+- Head of Legal Support: Ilia
+
+## Running
+
+    $ cd src
+    $ python main.py
+
+## Running in debug mode
+
+This will run with a faster player.
+
+    $ python main.py debug
diff --git a/src/inventory.py b/src/inventory.py
new file mode 100644
index 0000000..4a8727e
--- /dev/null
+++ b/src/inventory.py
@@ -0,0 +1,37 @@
+import collections
+
+class Bag:
+    def __init__(self):
+        self.contents = []
+
+    def __repr__(self):
+        representation = "Bag:\n"
+        representation += "====\n"
+        for item, count in collections.Counter([item.__repr__() for item in self.contents]).items():
+            representation += f"\t{item}: {count}"
+            representation += "\n"
+        return representation
+
+    def put(self, item):
+        self.contents.append(item)
+
+class Item:
+    pass
+
+class FiniteItem(Item):
+    pass
+
+class InfiniteItem(Item):
+    pass
+
+class Box(FiniteItem):
+    def __init__(self):
+        self.descriptor = "Box"
+    def __repr__(self):
+        return self.descriptor
+
+class SecondBox(FiniteItem):
+    def __init__(self):
+        self.descriptor = "Second Box"
+    def __repr__(self):
+        return self.descriptor
diff --git a/src/main.py b/src/main.py
index 8125e94..69988a9 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,5 +1,6 @@
 import pygame, numpy
 import math
+import sys
 
 from camera import CameraGroup
 from player import Player
@@ -10,9 +11,10 @@
 BACKGROUND = (50, 0, 0)
 PLAYER_START_X = 1000
 PLAYER_START_Y = 1000
+DEFAULT_SPEED = 8
 
 
-def main():
+def main(speed=DEFAULT_SPEED):
     pygame.init()
     screen = pygame.display.set_mode((WIDTH, HEIGHT))
     clock = pygame.time.Clock()
@@ -21,7 +23,9 @@ def main():
     boxes, collectibles, environment = create_custom_walls(camera_group=camera_group)
 
     player = Player(
-        startx=PLAYER_START_X, starty=PLAYER_START_Y, group=camera_group, boxes=boxes, collectibles=collectibles, environment=environment
+        startx=PLAYER_START_X, starty=PLAYER_START_Y, group=camera_group,
+        boxes=boxes, collectibles=collectibles, environment=environment,
+        speed=speed,
     )
 
     while True:
@@ -36,4 +40,7 @@ def main():
 
 
 if __name__ == "__main__":
-    main()
+    if "debug" in sys.argv:
+        main(speed=50)
+    else:
+        main()
diff --git a/src/player.py b/src/player.py
index a0fb046..e14c662 100644
--- a/src/player.py
+++ b/src/player.py
@@ -2,6 +2,8 @@
 import numpy as np
 import pygame
 
+import inventory
+
 SQUARE_ROOT_OF_TWO = math.sqrt(2)
 
 
@@ -10,7 +12,8 @@ class Player(pygame.sprite.Sprite):
     The Player class where the player is defined. The player is a sprite that
     can move around the map and interact with the environment.
     """
-    def __init__(self, startx, starty, group, boxes, collectibles, environment):
+    def __init__(self, startx, starty, group, boxes, collectibles, environment,
+            speed=8):
         super().__init__(group)
 
         self.stand_image = pygame.image.load(
@@ -34,9 +37,11 @@ def __init__(self, startx, starty, group, boxes, collectibles, environment):
         self.animation_index = 0
         self.facing_left = False
 
-        self.speed = 8
+        self.speed = speed
         self.prev_key = pygame.key.get_pressed()
 
+        self.bag = inventory.Bag()
+
     def walk_animation(self):
         """
         Animates the player walking.
diff --git a/src/terrain.py b/src/terrain.py
index 00f64c6..7e6e46f 100644
--- a/src/terrain.py
+++ b/src/terrain.py
@@ -1,5 +1,6 @@
 import pygame
 
+import inventory
 
 class Sprite(pygame.sprite.Sprite):
     """
@@ -87,7 +88,14 @@ class Collectible(Sprite):
     """
     def __init__(self, startx, starty, group):
         super().__init__("Graphics/terrain/boxAlt.png", startx, starty, group)
+        self.item = inventory.Box()
 
     def event(self, player):
+        player.bag.put(self.item)
         self.kill()
 
+
+class SecondBox(Collectible):
+    def __init__(self, startx, starty, group):
+        super().__init__(startx, starty, group)
+        self.item = inventory.SecondBox()
diff --git a/src/utils.py b/src/utils.py
index 254b30e..c2ac480 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -10,6 +10,7 @@
     SadBarrier,
     HappyBarrier,
     Collectible,
+    SecondBox,
 )
 
 def get_building_parameters(config_path):
@@ -87,6 +88,7 @@ def place_collectibles(collectibles, camera_group):
     collectibles.add(Collectible(300, 1100, camera_group))
     collectibles.add(Collectible(400, 1100, camera_group))
     collectibles.add(Collectible(500, 1100, camera_group))
+    collectibles.add(SecondBox(500, 600, camera_group))
     return collectibles