Great thread! The first one we did was "Through the Jungle the Elephant Goes" by Grace Nichols. We also love "Who's There?", "The Toaster", and "The Sea-Monster's Snack." My older son can almost recite "Pelican/Toucan" by Bert Kitchen, and "Alligator" by Grace Nichols. He can only recite chunks, different chunks different days, of this favorite of his - "Question Time" by Michaela Morgan. This fall, I plan for him to memorize "Witch, Witch" by Rose Fyleman. I can hardly wait for all the poems we get to do as the boys get older.
I also have boys, but here is a nice one for a little girl:
"Night Flight" by Shirley Hughes
Annie flew out of the window,
Bedclothes and cot and all,
And floated around above the ground,
And over the garden wall.
And her shadow skimmed over the gardens
And followed her all the way,
As she looked down on the roofs of the town
And the moon shone as bright as day.