IV fluids work good too!!!
But if that is not an option at home, then I guess watered down Gatorade is good...but I always go to the less sugar one, G2. They are good and if you need to, you can water it down too... I guess plain water is good too, but if I had to depend on it , it wouldn't get done, I hate just plain water... So, try drinking what ya like...fluids is fluids..and its all good!!