You will need:
Paper
Autumn leaves, preferably just picked from the tree
Colored pencils or crayons

Start by taking a sheet of paper and folding it in half width-wise. Place a leaf, vein side up, inside the folded sheet. Use the colored pencils or crayons to gently rub over the leaf so that the leaf becomes visible on the top of the paper. Use a variety of colors to create a multicolored effect. Remove the leaf and repeat with other leaves and colors. Mail to a friend or relative. Smaller versions can be used as place cards.