Have a legacy database and need some enumerations in your models to match those stupid '4 rows/2 columns' tables with foreign keys and stop doing joins just to fetch a simple description? Or maybe use some integers instead of strings as the code for each value of your enumerations? Here's EnumerateIt.
Gemfile gem 'enumerate_it', '~> 0.7.16'
install gem install enumerate_it -v 0.7.16