I have also created my own visual enforcer of these words for my son. I have created popcorn kernals with the words on them, a popcorn bucket (son colored in the stripes), and then I laminated them. I then added the words he knows, and will be adding 2 more a day until he is caught up with his class. I took some vanilla paper and drew the kernals on it, white poster board and made the popcorn bucket.
please excuse the primative drawings... just a visual to help