Adds new meteor toys and space carp plushies to arcade machines

Inspired by https://github.com/d3athrow/vgstation13/pull/778 but implemented in a way that is in my opinion a bit more fun. The Mini-Meteor™ when thrown will make the meteor impact sound and camera shake that are the hallmarks of everybody's favourite "natural" event, meteor showers. Obviously to prevent this from being spammed it's deleted upon use.

I also changed the AI toy's weight class to 2 because I always try to put them in my pocket and then get annoyed when I can't.

This just in, I've now included adorable space carp plushies! Here's a picture of both of these new toys:
![toy meteor and space carp plushie example](https://cloud.githubusercontent.com/assets/5348175/4713856/aea246c8-58e8-11e4-941c-dc5c650705ef.png)