I filled this lamp with wine corks and it gives it a rustic look.  The top is not easily removed, so I recommend filling it once instead of adding to it along the way.  Once re-assembled though, it looks great.  One downfall is that the cord comes off the entry point to the top of the vase, so you either have to run the cord down the back and tape it there, or what I do is I have positioned it on the table close to the wall next to a mirror.  I slip the cord straight back to the wall, and hide it under the mirror.  Overall, I like how it looks and gives me a chance to personalize it.