Although there isn't a coupon code for this site, I added it here. SigningTime is a collection of videos that teaches young children (as well as handicapped children), how to communicate through sign language.
My 6 year old was diagnosed with autism. These videos were a great tool. He was able to communicate his needs using sign. It cut down on the tantrums, which stemmed from his frustration. I recommend this resource to anyone with young children.