Acorns and oak leaves.

Leaves sizes are approximately from 3,55 to 5,12 inches ( 9 - 13 cm )
Acorns sizes are approximately from 1,8 to 2,17 inches ( 4,5 - 5,5 cm )

The pattern includes instruction with pictures how to knit 3 kind of acorns and 4 kind of leaves + unlimited email help from me in case you get stumped.