diff --git a/src/entity/item/mod.rs b/src/entity/item/mod.rs
index e3cbd09..303edf4 100644
--- a/src/entity/item/mod.rs
+++ b/src/entity/item/mod.rs
@@ -40,6 +40,17 @@ pub enum ItemLocation {
 */
 }
 
+#[derive(Debug, PartialEq)]
+pub struct Meseta(pub u32);
+
+impl Meseta {
+    pub fn as_bytes(&self) -> [u8; 16] {
+        let mut result = [0; 16];
+        result[12..16].copy_from_slice(&u32::to_le_bytes(self.0));
+        result
+    }
+}
+
 
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub enum ItemType {
diff --git a/src/ship/items.rs b/src/ship/items.rs
index 9d6be6e..9dcd068 100644
--- a/src/ship/items.rs
+++ b/src/ship/items.rs
@@ -11,12 +11,14 @@ use crate::entity::item::shield::Shield;
 use crate::entity::item::unit::Unit;
 use crate::entity::item::tool::Tool;
 use crate::entity::item::mag::Mag;
+use crate::entity::item::Meseta;
 
 
 #[derive(Debug, PartialEq)]
-pub enum StackedItem {
+pub enum ItemInstance {
     Individual(ItemEntity),
     Stacked(Vec<ItemEntity>),
+    Meseta(Meseta),
 }
 
 #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
@@ -26,13 +28,13 @@ pub struct ActiveItemId(u32);
 #[derive(Debug)]
 pub struct ActiveItem {
     id: ActiveItemId,
-    item: StackedItem,
+    item: ItemInstance,
 }
 
 impl ActiveItem {
     pub fn as_client_bytes(&self) -> [u8; 16] {
         match &self.item {
-            StackedItem::Individual(i) => {
+            ItemInstance::Individual(i) => {
                 match &i.item {
                     ItemDetail::Weapon(w) => w.as_bytes(),
                     ItemDetail::Armor(a) => a.as_bytes(),
@@ -43,12 +45,15 @@ impl ActiveItem {
                     ItemDetail::Mag(m) => m.as_bytes(),
                 }
             },
-            StackedItem::Stacked(i) => {
+            ItemInstance::Stacked(i) => {
                 let len = i.len();
                 match &i[0].item {
                     ItemDetail::Tool(t) => t.as_stacked_bytes(len),
                     _ => panic!(),
                 }
+            },
+            ItemInstance::Meseta(m) => {
+                m.as_bytes()
             }
         }
     }
@@ -68,12 +73,12 @@ impl ActiveInventory {
 
                 // does this do anything?
                 inventory[index].equipped = match item.item {
-                    StackedItem::Individual(ItemEntity {location: ItemLocation::Inventory{ equipped: true, ..}, ..}) => 1,
+                    ItemInstance::Individual(ItemEntity {location: ItemLocation::Inventory{ equipped: true, ..}, ..}) => 1,
                     _ => 0,
                 };
                 // because this actually equips the item
                 inventory[index].flags |= match item.item {
-                    StackedItem::Individual(ItemEntity {location: ItemLocation::Inventory{ equipped: true, ..}, ..}) => 8,
+                    ItemInstance::Individual(ItemEntity {location: ItemLocation::Inventory{ equipped: true, ..}, ..}) => 8,
                     _ => 0,
                 };
                 inventory
@@ -85,24 +90,25 @@ impl ActiveInventory {
     }
 }
 
-fn inventory_item_index(item: &StackedItem) -> usize {
+fn inventory_item_index(item: &ItemInstance) -> usize {
     match item {
-        StackedItem::Individual(i) => {
+        ItemInstance::Individual(i) => {
             match i.location {
                 ItemLocation::Inventory{index: index, ..} => index,
                 _ => panic!()
             }
         },
-        StackedItem::Stacked(i) => {
+        ItemInstance::Stacked(i) => {
             match i[0].location {
                 ItemLocation::Inventory{index: index, ..} => index,
                 _ => panic!()
             }
-        }
+        },
+        _ => panic!(),
     }
 }
 
-fn stack_items(items: Vec<ItemEntity>) -> Vec<StackedItem> {
+fn stack_items(items: Vec<ItemEntity>) -> Vec<ItemInstance> {
     let mut stacks = HashMap::new();
 
     for item in items {
@@ -113,11 +119,11 @@ fn stack_items(items: Vec<ItemEntity>) -> Vec<StackedItem> {
         .map(|(itype, items)| {
             match items[0].item.is_stackable() {
                 true => {
-                    vec![StackedItem::Stacked(items)]
+                    vec![ItemInstance::Stacked(items)]
                 },
                 false => {
                     items.into_iter().map(|i| {
-                        StackedItem::Individual(i)
+                        ItemInstance::Individual(i)
                     }).collect()
                 }
             }
@@ -141,7 +147,7 @@ impl ActiveItemDatabase {
         }
     }
 
-    fn activate_item(&mut self, item: StackedItem) -> ActiveItem {
+    fn activate_item(&mut self, item: ItemInstance) -> ActiveItem {
         self.id += 1;
         ActiveItem {
             id: ActiveItemId(self.id),
@@ -294,23 +300,23 @@ mod test {
 
         assert!(stacked.len() == 5);
         assert!(stacked.iter().filter(|k| {
-            **k == StackedItem::Individual(item6.clone())
+            **k == ItemInstance::Individual(item6.clone())
         }).count() == 1);
 
         assert!(stacked.iter().filter(|k| {
-            **k == StackedItem::Individual(item3.clone())
+            **k == ItemInstance::Individual(item3.clone())
         }).count() == 1);
 
         assert!(stacked.iter().filter(|k| {
-            **k == StackedItem::Individual(item1.clone())
+            **k == ItemInstance::Individual(item1.clone())
         }).count() == 1);
 
         assert!(stacked.iter().filter(|k| {
-            **k == StackedItem::Stacked(vec![item2.clone(), item4.clone(), item5.clone()])
+            **k == ItemInstance::Stacked(vec![item2.clone(), item4.clone(), item5.clone()])
         }).count() == 1);
 
         assert!(stacked.iter().filter(|k| {
-            **k == StackedItem::Stacked(vec![item7.clone(), item8.clone(), item9.clone()])
+            **k == ItemInstance::Stacked(vec![item7.clone(), item8.clone(), item9.clone()])
         }).count() == 1);
     }
 }