I have about a billion leftover 9" tall vases from our wedding, so I was happy to put a few of them to use.
And, I actually took pictures of this in progress for some reason, so you'll see more than just the final outcome for once!
I just used some craft glue and drew the tree bark pattern right on the vases.
Then I spray painted over that.
This was a really easy and cheap project since I had all of the supplies already. You could also use hot glue to draw the bark, but a bottle of glue was easier to control for me.
I don't have a photo of them in action, but when I bust them out this winter, I'll be sure to post one. I also think these would be really cute as centerpieces for a wedding that was more rustic or laid back.