Bake marbles in the oven at 350 degrees for 20 minutes then immediately put in ice water. Make sure the baking dish and the bowl holding the water are metal. Glue on end caps to hold an "o ring" and add to any chain or ribbon of your choice. I read you can also use the glass "stones" you find for aquariums.
DIY : Luminous Glass Wearing gloves, carefully cut the ends of various colored glow sticks. Swirl the cut end around the inside of any clear glass bottle, jar or bowl to coat them with the glow solution. You can experiment with multiple colors in one jar for a tie dye glow look. Enjoy these lovely jars for any of your gatherings. They are the perfect touch for any party. (Idea compliments of http://www.bes.miche.com)