Put sand that you can buy at the store. Place seashells and marbles inside. Fill with water slowly. Too with floating candle. Use  a Mirror as a base
The image shows a table with a glass fishbowl containing water and blue and pink shells, a lit candle, and various tableware items.
The image shows a table with a glass fishbowl containing water and blue and pink shells, a lit candle, and various tableware items.