I found this craft for earning the green Daisy petal, use resources wisely, while surfing Pinterst. It was created by Sara Rivka at Creative Jewish Mom.
In order to do this craft successfully, you will need to give each parent a list of items to save for about a month ahead of time. Each girl needs to have at shoebox for the base and assorted sized paper towel and toilet paper tubes, or even different sized cans! You can use scrap paper from other crafts to make the windows and decorations.
You can find the exact directions, along with the finished product here.