I love Dr. Seuss so I always use the week of his birthday to read as many books as I can by him to the kids we do all kinds of different crafts such as making Cat in the Hat hats and coloring pages with the different characters from the different books. I have found several differnt activities to do with the kids on this site.
http://www.seussville.com/
I also have collected some activities over my time as a teacher. Read Across America is also on Dr. Suess's Birthday March 2nd. It's nice to talk to the kids about the fact that all the kids in the country are participating in something all together.