| Clue | Source | Date |
|---|---|---|
| Pen with bright ink | LA Times Daily | 29 Mar 2023 |
| Neon marker | ||
| Neon marker | New York Times | 27 Oct 2019 |
| Attention-getting marker | The Washington Post | 03 Nov 2018 |
| Attention-getting marker | LA Times Daily | 03 Nov 2018 |
| Attention-getting marker | ||
| Avery product for note-takers | New York Times | 07 Feb 2015 |
| Avery product for note-takers |