I had an idea that would be very useful on my server, and I know everyone will love the idea. So here it is. When you destroy a mob spawner, you get a mob egg of the respective spawner type (zombie spawner drops zombie egg), in addition to the XP you get since 1.3. Then, you can take that egg, 7 iron bars, and a diamond block (or some other harder to get block), and arrange them on a crafting table like this: Using the idea of getting spawn eggs from spawners will limit crafting these to only ones you will find natually (so you can't make any ghast spawners, or something like that ), and using a diamond block will make these expensive to craft. Thanks in advance to anyone who would make this.