Sand terrarium. Easy to make. I just got back from Florida and collected jars of sand. I took an old candle jar and melted all the wax at the bottom out. Filled the bottom with sand 1/4 of the way, place shells and glass stones. My husband's cousin made tiny fishes out of clay. I left the jar open to air out the sea smell from the sand. Place the lid on and there you have it. A little bit of the sea.