Moss - The moss will be used to cover the hills and make them look like grass hills for the truffula trees to set into
Pinwheels - I found these fun cake topper pinwheels for this craft, but if you are making a larger truffula tree then you might want to get large pinwheels
Paper Straws - I used black and white striped paper straws for this craft, but you can use any design you like
Instructions
Add glue to the foam half-balls
Apply moss to the glue to cover the half-balls and make them look like a grassy hill
Cut the paper straw to fit over the toothpick on the pinwheel, leaving a little bit exposed on the bottom so you can push it into the foam
Insert the end of the toothpick into the center of the foam hill
Notes
Truffula trees are usually orange, yellow, pink, and purple. Try to find pinwheels with those colors or shades of them