diff --git a/worlds/timespinner/Locations.py b/worlds/timespinner/Locations.py
index 7e0a884d..8acd58c4 100644
--- a/worlds/timespinner/Locations.py
+++ b/worlds/timespinner/Locations.py
@@ -10,7 +10,7 @@ class LocationData(NamedTuple):
     code: Optional[int]
     rule: Callable = lambda state: True
 
-def get_locations(world: Optional[MultiWorld], player: Optional[int]):
+def get_locations(world: Optional[MultiWorld], player: Optional[int]) -> Tuple[LocationData, ...]:
     location_table: Tuple[LocationData, ...] = (
         # PresentItemLocations
         LocationData('Tutorial', 'Yo Momma 1',  1337000),
diff --git a/worlds/timespinner/Regions.py b/worlds/timespinner/Regions.py
index 863f7339..12782821 100644
--- a/worlds/timespinner/Regions.py
+++ b/worlds/timespinner/Regions.py
@@ -150,9 +150,9 @@ def create_regions(world: MultiWorld, player: int, locations: Tuple[LocationData
     connect(world, player, names, 'Space time continuum', 'Caves of Banishment (upper)', lambda state: pyramid_keys_unlock == "GateCavesOfBanishment")
 
 
-def create_location(player: int, name: str, id: Optional[int], region: Region, rule: Callable, location_cache: List[Location]) -> Location:
-    location = Location(player, name, id, region)
-    location.access_rule = rule
+def create_location(player: int, location_data: LocationData, region: Region, location_cache: List[Location]) -> Location:
+    location = Location(player, location_data.name, location_data.code, region)
+    location.access_rule = location_data.rule
 
     if id is None:
         location.event = True
@@ -169,7 +169,7 @@ def create_region(world: MultiWorld, player: int, locations_per_region: Dict[str
 
     if name in locations_per_region:
         for location_data in locations_per_region[name]:
-            location = create_location(player, location_data.name, location_data.code, region, location_data.rule, location_cache)
+            location = create_location(player, location_data, region, location_cache)
             region.locations.append(location)
 
     return region
diff --git a/worlds/timespinner/__init__.py b/worlds/timespinner/__init__.py
index cf7e75dc..dae726ba 100644
--- a/worlds/timespinner/__init__.py
+++ b/worlds/timespinner/__init__.py
@@ -84,25 +84,25 @@ def create_item(name: str, player: int) -> Item:
     return Item(name, data.progression, data.code, player)
 
 
-def get_excluded_items_based_on_options(world: MultiWorld, player: int) -> List[str]:
-    excluded_items: List[str] = []
+def get_excluded_items_based_on_options(world: MultiWorld, player: int) -> Set[str]:
+    excluded_items: Set[str] = []
 
     if is_option_enabled(world, player, "StartWithJewelryBox"):
-        excluded_items.append('Jewelry Box')
+        excluded_items.add('Jewelry Box')
     if is_option_enabled(world, player, "StartWithMeyef"):
-        excluded_items.append('Meyef')
+        excluded_items.add('Meyef')
     if is_option_enabled(world, player, "QuickSeed"):
-        excluded_items.append('Talaria Attachment')
+        excluded_items.add('Talaria Attachment')
 
     return excluded_items
 
 
-def assign_starter_items(world: MultiWorld, player: int, excluded_items: List[str], locked_locations: List[str]):
+def assign_starter_items(world: MultiWorld, player: int, excluded_items: Set[str], locked_locations: List[str]):
     melee_weapon = world.random.choice(starter_melee_weapons)
     spell = world.random.choice(starter_spells)
 
-    excluded_items.append(melee_weapon)
-    excluded_items.append(spell)
+    excluded_items.add(melee_weapon)
+    excluded_items.add(spell)
 
     melee_weapon_item = create_item(melee_weapon, player)
     spell_item = create_item(spell, player)
@@ -114,7 +114,7 @@ def assign_starter_items(world: MultiWorld, player: int, excluded_items: List[st
     locked_locations.append('Yo Momma 2')
 
 
-def get_item_pool(world: MultiWorld, player: int, excluded_items: List[str]) -> List[Item]:
+def get_item_pool(world: MultiWorld, player: int, excluded_items: Set[str]) -> List[Item]:
     pool: List[Item] = []
 
     for name, data in item_table.items():
@@ -132,12 +132,11 @@ def fill_item_pool_with_dummy_items(world: MultiWorld, player: int, locked_locat
         pool.append(item)
 
 
-def place_first_progression_item(world: MultiWorld, player: int, excluded_items: List[str],
-                                 locked_locations: List[str]):
+def place_first_progression_item(world: MultiWorld, player: int, excluded_items: Set[str], locked_locations: List[str]):
     progression_item = world.random.choice(starter_progression_items)
     location = world.random.choice(starter_progression_locations)
 
-    excluded_items.append(progression_item)
+    excluded_items.add(progression_item)
     locked_locations.append(location)
 
     item = create_item(progression_item, player)