After seeing the article "the eternal flame" in MAKE: Magazine, my first thought upos seeing the project was that it's not really "eternal" because you can't change the battery if it's glued shut! After reading, I saw that it used teflon tape to make it watertight and re-openable, but not before a project idea came about.
Several days later, I completed my new wirelessly charged, rechargable indestructable LED lantern. While it's not nearly as cheap or easy as the version in make, this one can stand some pretty tough abuse, as well as costing less after a few uses, depending on where you buy batteries. Don't forget to vote for me in the lamps and lighting and UP! Contests. If I win the UP! I will update with an even tougher 3d printed lamp, and more tests.
For a video and alternative guide, go to http://www.designnews.com/author.asp?section_id=1362&doc_id=245321
where this project is also published, along with a video.