chalkboard wine glasses--what a fun idea. Same idea could be used on any glass with any color, if you get the additive for chalkboard paint and put it in the color of your choice:) Nice wedding or shower gift too!
Cheap glasses, rubber bands, and frost spray paint. Place rubber bands how you want, then use Rust-Oleum Frosted Glass spray paint, waiting 2 min in between coats. Once dry you will want to use a sealer to make it water resistant. You can use Krylon Matte