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
For Dining Room-Mercury glass mason jars. Looking glass spray paint, equal parts vinegar/water spray bottle. Spray with water mix then add light coat of spray paint. Allow to dry. Use a paper towel to wipe away bubbled areas for completed look.
Detailed tutorial explaining how to make faux mercury glass. This is probably the best tutorial I've seen, lots of pictures and a great explanation of all the steps. Not too hard, but should be done outside because the paint is spray paint. How beautiful.