Set up a long plastic trowel with little water wheels with posts on both sides. Maybe ten total, every other water wheel has a post coming out on opposite side. It will look like a single line of water wheels when complete. Then connect the post of each water wheel a four pronged flag wheel, on the outside part of the water wheel, not the inside. Water wheels must be made of plastic and have little cups to capture water to make post spin. Use a thin plastic cutting mat to cut to make water wheels, trowel, use tweezers and hot glue-gun to attach pieces. Then glue cut little fishes, made from contruction paper, maybe yellow? back to back, on each of the prongs. Prongs can be tooth picks glued to post with hot glue. Try to balance weight of each post, water wheel on one side, fish and prongs on the other. They must be balanced to spin. Use cardboard to cover bottom half of the fish on the prongs, along the sides of the trowel. Only leave a gap of one inch or less, or of the total thickness of the fish plus tooth pick, and then decorate/paint to look like a flowing stream. Then have a bowl at one end of the trowel, and from underneath lift the other end of the towel to about a 10% grade, using blocks. Attach a fish tank hose to the top of the trowel, and a fish tank pump in the bowl at the other end. Using a solar battery for energy, turn on the pump. It will appear the fish are jumping out of the water and swiming upwards! You also can use a hand pump and a single tube dipped in bowl of water, to create a suction that with make the water flow without a pump. Practical application? Using any sized water wheel on any stream or flowing water can be an alternative energy source to windmills, and in your case, can be portable, an alternative to a gas powered generator or solar powered. Great for camping or living off-grid.