Pour boiling water over Lipton tea bags; cover and brew 5 minutes. Remove tea bags and squeeze. Stir in sugar until dissolved; cool.
In blender, process tea mixture with blueberries until almost smooth. Turn into 8-by-8-inch metal pan; freeze for 1 hour.
With fork, stir to break up ice. Freeze an additional hour, or until firm. Stir with fork; serve immediately.
*Also great with frozen peaches or a combination of blueberries and peaches.