Try putting the name on all objects in the room. Put "CHAIR" on a chair, "WINDOW" on a window. Students can walk around the room and pronounce the words. the words serve as a constant reminder of common objects. It also allows willing students to practice during a break or meal time.
You may also be able to buy cheap children's toys to use, such as a car, truck, cow, dog, and other objects that can be passed around and each student can say the name of the toy. You can write the name of the object on the bottom to help as a reminder when needed.