Here’s a gallery of shivs confiscated from a New Jersey prison 20 years ago:
The individual parts that make up a shiv tend to be everyday objects, innocent things furtively reconstituted as lethal weapons. Each design choice is essential, but what’s particularly notable is that shivs, at their core, are not so much evocations of minimalism as they are symbols of survivalism. A shiv is all about masked utility: it’s an innocuous object with improbably toxic intent (whether used to attack others or to protect oneself…).
(via We Make Money Not Art)