diff --git a/game/scripts/utility/actions.rpy b/game/scripts/utility/actions.rpy
new file mode 100644
index 00000000..5a772cbc
--- /dev/null
+++ b/game/scripts/utility/actions.rpy
@@ -0,0 +1,68 @@
+init python:
+    class SwitchShopCategory(Action):
+        def __init__(self, category: str, items: list):
+            self.category = category
+            self.items = items
+
+        def __call__(self):
+            cs = renpy.current_screen()
+
+            if cs is None:
+                raise Exception("No current screen.")
+
+            items = self.items
+            scope = cs.scope
+
+            scope["shop_items"] = items
+            scope["selected_category"] = self.category
+            scope["selected_item"] = items[0] if items else None
+
+            renpy.restart_interaction()
+
+    class SortFilter(Action):
+        def __init__(self, screenvar: str, sort_keys=None, filter_keys=None):
+            self.screenvar = screenvar
+            self.filter_keys = filter_keys
+            self.sort_keys = sort_keys
+
+        def __call__(self):
+            cs = renpy.current_screen()
+
+            if cs is None:
+                raise Exception("No current screen.")
+
+            scope = cs.scope
+            var = self.screenvar
+
+            if var not in scope:
+                raise Exception("Screen var is missing.")
+
+            items = scope[var]
+
+            if self.filter_keys:
+                items = self.filter(items, self.filter_keys)
+            if self.sort_keys:
+                items = self.sort(items, self.sort_keys)
+
+            scope[var] = items
+            renpy.restart_interaction()
+
+        @staticmethod
+        def filter(items, keys):
+            for key in keys:
+                if key.startswith("not "):
+                    attr = key[4:]
+                    items = filter(lambda x: not getattr(x, attr), items)
+                else:
+                    items = filter(lambda x: getattr(x, key), items)
+            return items
+
+        @staticmethod
+        def sort(items, keys):
+            for key in keys:
+                items = sorted(items, key=lambda x: SortFilter.natsort(getattr(x, key)))
+            return items
+
+        @staticmethod
+        def natsort(s, pattern=re.compile("([0-9]+)")):
+            return [int(t) if t.isdigit() else t.lower() for t in pattern.split(str(s))]