Good uses for Tide Pods Container - be sure to wash them out carefully. Soak one side at time in sink to loosen label, then use goo gone and detergent to gently remove adhesive to ensure a clear scratch free container.
This was perfect for my girls. The glass pebbles are really easy to find at WalMart, Target or any craft store and cost me about $5 for a bag of 100 or so. ModgePodge scrapbook paper to the back of the glass and let it dry. We glued the magnets with E6000 glue. I used rub-on letters as well.