Everyone know the book The Hungry Caterpillar by Eric Carle! Well, now you have the clip art to use as you please! Commercial use! Just please credit me back by adding my url to your credits page. They do have white backgrounds. I have directions for changing this in the zip file. All you do is change the transparency right there in Word or Powerpoint! It's easy peasy!
Enjoy! Feel free to message me if you need something specific! I would love to make it for you!