Here are some great ideas:
Cat in the hat marshmallow pops
http://www.megacrafty.com/2011/03/happy-birthday-dr-seuss.html
Thing 1 and Thing2
http://zakkalife.blogspot.com/2009/10/craft-project-thing-1-thing-2.html
Dr.Seuss birthday party & green eggs
http://www.sowonderfulsomarvelous.com/2010/01/dr-seuss-birthday-party.html
Craft the cat in the hat - easy
http://www.craftjr.com/dr-seuss-cat-in-the-hat-craft/
Green eggs & cheese sandwich
http://www.momtastic.com/cooking-recipes/breakfast/127175-green-eggs-and-cheese
Cat in the hat marshmallow pops
http://www.megacrafty.com/2011/03/happy-birthday-dr-seuss.html
Thing 1 and Thing2
http://zakkalife.blogspot.com/2009/10/craft-project-thing-1-thing-2.html
Dr.Seuss birthday party & green eggs
http://www.sowonderfulsomarvelous.com/2010/01/dr-seuss-birthday-party.html
Craft the cat in the hat - easy
http://www.craftjr.com/dr-seuss-cat-in-the-hat-craft/
Green eggs & cheese sandwich
http://www.momtastic.com/cooking-recipes/breakfast/127175-green-eggs-and-cheese