Here are some very handy instructional powerpoints focusing on the alphabet to teach vocabulary. See the Gif Lingua Alphabet books also!
Please see THIS WONDERFUL DISCUSSION for many resources based on the Alphabet. Also, see the PHONICS area of this page for nice videos for writing and describing each letter. And the Alphabet Helpers category on our Elementary page.
A couple more that are nice and different.
Here are a few handy alphabet organizers. Just suggest a topic and see what students can come up with.