I purchased a spray bottle in the toiletries section of Target and filled it with water. I sprinkled some multicolored glitter and ta-da! BRAIN SPRAY. Now... what can you use brain spray for? Anything that you want :) I primarily save my brain spray for testing and times where I really need my kiddies to think. I literally will mist each of the kids with the spray and say that the magic spray will activate their brain and make them think better :) Works like a charm!