In a blender, blend the batter ingredients (eggs, water, milk, baking powder, flour, sugar, and oil) and let the mixture stand for 30 minutes.
In an 8-inch non-stick skillet, heat 1 teaspoon of oil over moderately high heat.
Pour in enough batter to just coat the bottom of the skillet, swirling the oil around. Cook undisturbed for 3 minutes, then turn over and cook for another 2 minutes. Transfer the blintz to a plate.
Repeat the process using up the remaining batter.
To make the filling, blend the farmer cheese, cottage cheese, yogurt, maple syrup (or honey), and cinnamon in a food processor until smooth. If necessary, add a little flour to thicken the filling.
Place 3 tablespoons of filling in the center of each blintz. Fold opposite sides of the wrapper over the filling until the sides barely touch. Fold in the ends to completely enclose the filling, forming a packet, and arrange seam-side down.
Serve immediately topped with strawberry yogurt and fresh fruit. Alternatively, place on a baking sheet and bake covered with foil for 5 to 10 minutes until heated through, or refry the blintzes for a crunchy exterior.