I wake up late at night. I spill my milk at breakfast and then turn on the light. Say something shocking or surprising. I hate cats. I go to bed each morning.
Cats are like people.
The summer sun procrastinated until nine before going to bed. Drip, drop, falls the rain. It is driving me insane. I hope these examples give you a number of new ways to start a poem. Just for fun, you might want to take one of my opening lines and see what you can do with it.