I have one about backpacks, too.

I hate, hate, hate, hate, hate, hate, hate, hate, hate, hate, hate, hate, hate my big sister's heavy, heavy, heavy backpack when I go to pick-her-up.

Her name is Magpie. And she gets me into holding her backpack. She's so nice to me. Except for when she gets me into holding her backpack and it's so heavy.

The End!