For the "sand"

Preheat oven to 350 degree

Place the coconut onto a baking sheet lined with parchment paper and spread it out so it is in an even layer

Place in the oven for 5-10 minutes or until lightly toasted, and the color of sand you are looking for

Allow to cool

Place the graham crackers and the cooled toasted coconut into a food processor and process until it if finley ground and looks like sand!