title: How do I create global utility functions in rails
body: <p>I need a place to stick global referentially transparent utility methods. These should be accessible from everywhere in rails (Models, Views, Controllers, and everywhere else). e.g.:</p>
  
  <pre><code>bool = GlobalUtilities.to_bool "false"
  unicorn = GlobalUtilities.make_me_a "unicorn"
  </code></pre>
  
  <p>What's the best way to do this?</p>