Make mob spawners unbreakable (by players and explosions).
Ultra-Lightweight (Have you seen the file size?!).
Permission
unbreakablespawners.overrideAllows player to break spawners.
This plugin is meant to be an ulta-lightweight solution to a specific problem. I will not be adding any more features. If you need more options then I would recommend one of the other more verbose world management plugins that are available.