You can also read a story to your child and create a small vocabulary list from words in the story. This will help your child associate the word with the story which will not only increase memory but help your child understand what the word is.
One of my favorite games is to label items around the house. This allows your child to get up and moving. As you know, it is difficult to keep young children in one place. Going around the house will help your child burn off some of that extra energy which will, in turn, allow you to work on spelling longer than if you have your child seated the entire time.
Another game children love is when a parent writes the word on a large piece of paper and puts it in the box. Then the child can pull the paper out of the box. The excitement and anticipation of a "surprise" word really helps to motivate children to play this game and learn to spell the word that he/she picks out.
Slipping small pieces of paper with a vocabulary word inside a cookie is another game that I recommend. I love to bake, especially cookies. When your child pulls the paper out of the cookie that he is eating, you can ask him to spell the word.
Lastly, I recommend that you ask your child to spell out words that he hears on television. This will help your child's listening skills since he will rarely see the word spelled out on the television.
Once your child learns the basic words list above, he is ready to move to larger words such as: chair, table, book, cookie, some, long, have, cloth, dine, wine, list, tape, mask, etc.