Combine the milk, rice, and salt in a saucepan over medium heat. Simmer for about 30 minutes, or until the rice is tender.
Combine 1/2 cup of the sugar, the egg yolks, vanilla, cinnamon, and nutmeg in a bowl.
When the rice is done, stir the blueberries and the sugar and egg mixture into the hot rice mixture in the pot. Cook over medium heat, stirring constantly, for about 4 minutes, or until the mixture thickens. Remove from the heat and let cool.
When the rice mixture has cooled, combine the cream and the remaining 1 tablespoon sugar in a large mixing bowl. Using a handheld electric mixer, beat until soft peaks form. Fold into the cooled rice mixture.
Spoon the mixture into 6 (4-ounce) custard cups, cover with plastic wrap, and refrigerate for at least 1 hour.
Serve chilled, drizzled with maple syrup.