Our MWF classes created these sand sculptures for our Letter S week. Working with two children at time, it takes two class periods for everyone to complete their bottle. We set up small cups and spoons in the art center with funnels. I needed the pen because sometimes the sand gets stuck and needs a little poke.
We make our own colored sand because it is a lot cheaper than buying colored sand from the craft supply stores. These containers filled 30 sand bottles and we still have some left in each container.
How to color sand---http://metamoracommunityprek.blogspot.com/2011/02/sand-bottles-how-to.html