Then watch Horton Hears a Who as a family. Popcorn optional but encouraged!
Make a pencil Horton Hears a Who craft (Source: FamilyCrafts)
After movie and craft time, spend some time online. Go to Suessville.com and play a few games.
In the afternoon, do a reading of Red Fish, Blue Fish and then make a tissue paper fish (source Craftideas.info)
Of course, you can eat Goldfish crackers while you are crafting!
At the end of our day, my kids are going to clean up in a great big bath full of green water and some play Yertle the Turtles (and a book reading as well!).
Enjoy your special pre-birthday funtivities!