I found a clear glass rolling pin in a garage sale for one dollar and put about an inch of genuine Long Beach Peninsula sand inside. I then went through my basket of shells and found any that would fit inside...also some tiny rocks and pieces of drift wood. The neat part about this shell container is that you can just roll it a bit and have a whole different scene...soooooo cooooool! Since then, I have found a pink clear one and another clear one to fill. Haven't done those yet, but will. I love reusing items to make something completely different.
