Any one who has been around small children likely has direct experience with one of the more damaging items known to Man: LEGO bricks.
Ever stepped on a thumbtack? Mmhhm.
Imagine my surprise when I saw this display at at an office products store:
An admittedly lo-res image, but the bins in the foreground contain tubes of geometrically-shaped thumbtacks, and the bins behind have the same thumbtacks in LEGO-shaped containers. By ‘geometrically-shaped’ I mean the head of the thumbtack is a hard plastic rendition of a Platonic solid. In a LEGO container.
Forget tactical nukes. Lets just air-drop some of these across a line of advance.