MarBowl by Baileigh Knight - This is made from flat glass marbles and superglue with an old CD for the base; and took about 30 minutes in all. There's a tea candle inside, but even without one, when placed near a lamp (like here), it looks lit up anyway. Great craft for kids; terrific gift idea for anyone. You can make them as tall/wide as you want/need.
These are flat sided marbles. I just put them on a pie plate in a oven at 500 degrees for about 20 minutes. Then threw them in a bowl of ice water. They will crack. I repeated this a few times to make them crack more. They will make pretty jewelry or maybe a sun catcher.