Food: Hold your left hand out flat, malke a scooping motion with the right as though you are eating from a bowl.
Air: Put your hand flat on your chest lift it off and shrug to mime breathing. Make it dramatic for fun.
Water: Hold your right thumb and little finger out. Tip it back as though you are drinking. This one is especially fun if you say "goik, goik, goik," as though you are drinking.
Movement: Wave your hands all around your head as though swatting at flies.
Repropduction: Hold one hand out, make a circle with your fingers. Hold the other hand up behind it, making the same circle. Pull your hands away from one another dramatically and say "Poik!" in a high pitched voice.