Love to put differant color bottles on here, Clear ones you can empty a bottle of fingernail polish on the inside, twist bottle as it runs down. i use irredescent, or sparkly colors that catch the sun.
Bottle Trees---I made mine with a wild cherry baby tree that i had to cut out of my crepe myrtle. just wrap the bottom with some plastic and bury. Such a pretty addition to the garden and you can recycle your old wine bottles and ward off evil spirits at the same time :)