ItemStack pot1 = new ItemStack(Material.POTION, 1, (short) 16378);
                ItemStack egg1 = new ItemStack(Material.MONSTER_EGG, 1, (short) 90);
                
                ItemStack egg2 = new ItemStack(Material.MONSTER_EGG, 1, (short) 90);
                ItemMeta meta = egg2.getItemMeta();
                meta.setDisplayName("EGG");
                egg2.setItemMeta(meta);
                
                ItemStack pot2 = new ItemStack(Material.POTION, 1, (short) 16378);
                ItemMeta meta2 = pot2.getItemMeta();
                meta2.setDisplayName("POTION");
                pot2.setItemMeta(meta2);
                
                Inventory inv = Bukkit.createInventory(null, 54);
                inv.addItem(pot1.clone(), egg1.clone(), pot2.clone(), egg2.clone());
                p.openInventory(inv);
                
                p.getInventory().addItem(pot1, egg1, pot2, egg2);