Though it is a little late in being finished, we have finally completed the text portion of our Skyward Sword Goddess Cube Locations guide. At the moment this page has a detailed look at how you can locate all 26 Goddess Cubes and how to track down the treasure chests. It also tells you what items are in the chests so you know which ones to go after first.
Still need more help with Skyward Sword? Do not forget to check out the rest of our guides.