Spread flour on a baking sheet and bake at 350°F for 5 minutes or until it reaches 165°F to make it taste-safe. Let cool.
In a large mixing bowl, combine 5 cups flour with ½ to 1 cup cocoa powder or hot chocolate mix.
Slowly drizzle in 1 cup oil, mixing with hands until the mixture feels like soft, powdery sand.
Transfer the cloud dough to a sensory bin and toss in mini marshmallows and sensory play tools.
Let them play!