This blend file is a collection of cameras, objects and a single light source designed to quickly and easily create good looking sky cube maps for games or animation. These are not necessarily photo realistic, but provide a great start for backgrounds or reflection maps.
The project is based off the concepts provided by http://www.superrune.com/technical/tutorial_skies.php and following the examples on his website can give you a good foundation for improving your own skies.
Included is a readme for some basic info and a gimp image file to demonstrate how to combine your rendered images into a working cubemap.
CC0 for the most fun, though I would appreciate posting links to any works you come up with in the comment section below!