These are pistachio shells! Hot-glue a second row of shells outside the first, keeping them flat and tucking them between the first row. Finally, hot-glue pistachios to the metal around the candle and place it in the center.
Turn a small courtyard into a sanctuary by adding an outdoor hot tub! Fun view of spa pool from above. I would have a hot tub like this! It's private and looks so nice rather than those ugly big plastic things.