| Clue | Source | Date |
|---|---|---|
| Pocket blades | ||
| *Foldable whittling tools | The Washington Post | 16 Aug 2021 |
| *Foldable whittling tools | LA Times Daily | 16 Aug 2021 |
| Whittlers' tools | New York Times | 15 Jun 2019 |
| Whittlers' tools | ||
| . They make quills sharp, spreading even ink between papers' margins | ||
| Folders in pockets | Newsday | 11 Jul 2015 |
| Folders in pockets | ||
| Source of some jail violence? |