Get a rectangular piece of paper
Fold it in half lengthwise
Fold it in half again lengthwise
Unfold the last fold
Fold one corner diagonally to the center crease
Repeat with the other corner to form a triangle end
Fold the triangle end up along the bottom edge
Continue folding the strip into triangles until the paper is used up
Tuck the final flap into the pocket to secure it
Flatten the paper football
Use it for flicking between fingers or across a table