With this package you can create a checkbox list, dropdown list or radiobutton list based on an enum.
After installation there a 3 new property editors you can choose from when you create a new datatype.
This package only works on 7.0.2 or higher.
If the package doesn't work try to clear the browser cache after installation.
You can watch a demonstration here: http://www.screenr.com/Uw7N
The source code is available here: https://github.com/jbreuer/EnumLists