Please note that this plugin is now available and up to date here: https://www.spigotmc.org/resources/simple-spawners.27934/
Slightly unsatisfied with the other assorted mob spawner plugins, I decided to write my own for convenience. SimpleSpawners is a very light weight plugin that allows the creation of spawners with any of the Bukkit entity types. Unlike some of the other mob spawner plugins, SimpleSpawners has one command to give a player a spawner of a certain type, making it easy to use in conjunction with BuyCraft

Features

• Spawn mob spawners of any type!
  
• Doesn't have to be silk touch only harvesting.

Permissions

• SimpleSpawner.give - Allows players to use /ss give [player] [type] [amount]
  
• SimpleSpawner.get - Allows players to receive mob spawners when havesting with silk-touch
  
• SimpleSpawner.get.nosilk - Allows players to receive mob spawners when harvesting without silk-touch

(Note that to use the nosilk permission the player must also have the get permission)

Commands

• /ss give [player] [type] [amount] - gives the [player] [amount] spawner(s) of the type [type]

Configurations

• None

EntityTypes (known to work)

CREEPER, SKELETON, ZOMBIE, SLIME, GHAST, PIG_ZOMBIE, ENDERMAN, CAVE_SPIDER, SILVERFISH, BLAZE, MAGMA_CUBE, ENDER_DRAGON, WITHER, BAT, WITCH, PIG, SHEEP, COW, CHICKEN, SQUID, WOLF, MUSHROOM_COW, SNOWMAN, OCELOT, IRON_GOLEM, VILLAGER.