Dynamically build and include a parameterized module. Similar to the Sequel gem inheritance mechanism.

modulator.rb

module Awesome
  def self.Stuff(thingy)
    Module.new do
      class_methods = Module.new do
        attr_accessor :thingy
      end

      define_singleton_method :included do |klass|
        klass.extend(class_methods)
        klass.thingy = thingy
      end

      def awesome_stuff
        "I'm awesome indeed"
      end
    end
  end
end

class NotSoAwesome
  include Awesome::Stuff(:piece_of_cake)
end

NotSoAwesome.thingy # => :piece_of_cake
my_obj = NotSoAwesome.new
my_obj.awesome_stuff # => "I'm awesome indeed"