Green Eggs and Ham by Dr. Seuss was a real favorite when my children were little. Many schools still serve green eggs and ham on Dr. Seuss's birthday. This excerpt can be printed and added to a poetry journal or reading notebook.
I really like using the IPad for intervention. Montessori Crosswords is an App with a movable alphabet that can strengthen phonics skills for students in grade K-2.
Marble Math is a great App for practicing math skills that can be aligned to Common Core Standards.
Jack Prelutsky is one of my favorite authors of funny poetry for children. Great poetry used throughout the year can bring smiles and enjoyment, as well as much needed reading fluency practice.