Remix of: http://www.thingiverse.com/thing:128021
The floor of the original vase is rounded upwards, which not only causes printing problems, but makes it difficult to use it as a tealight holder because you'd have to balance the tealight in the middle.
I simply removed the entire bottom of the vase, and replaced it with a thin cylinder -- flat on both sides.
Update: I failed miserably at printing it, anyway! I guess I need some supports at the top...