I think the most important thing you can do for the little ones is to get them engaged in technology as soon as possible. With the IWB, Little Animation for Kids, has nice interactives and games suited nicely for the IWB.
This simple site is a nice IWB online activity where students can choose letters to spell different words based on objects that they see. I really wish I could embed it, perhaps into an interactive lesson plan, but the little kids K-2, will like it.