What you'll need:
paper - heavier stock paper works best
cut squares of bubble wrap. mine were about 4x4
brown markers or crayons
If you child is older they can draw their own tree trunk, if they are younger draw it for them.
Put a thin layer of each color of paint on a left over lid or reusable bowl or plate.
Show your child how to take the square of bubble wrap into their hand and dip it into the paint, then dab up and down on the paper in different spots above the tree trunk.
Use different colors to create a fun Fall picture. Enjoy!