A cup, 2 plates, a fork or spoon
Have the dishes sitting out and pretend to be drying them
A camper comes along and explains he has been hiking for hours and asks for a drink.
Give the cup to the camper.
The camper says, “wow, this is really clean”
You reply by saying, “as clean as 3 rivers can get it”
Camper 2 comes in and explains how he needs food.
Hand him the plate. Camper says the same thing and you reply by saying the same thing.
3rd camper comes and asks for food, give him another plate and a fork or spoon. Then that camper asks, how do you get your dishes so clean, you reply by saying, “My dog, Three Rivers!”