| Clue | Source | Date |
|---|---|---|
| Gather dust | LA Times Daily | 05 Nov 2021 |
| Just sit there | Newsday | 07 Mar 2021 |
| Gather dust | New York Times | 06 Dec 2019 |
| Gather dust | ||
| Gather dust | The Washington Post | 03 Feb 2019 |
| Gather dust | LA Times Daily | 03 Feb 2019 |
| Gather dust | ||
| Go unused | New York Times | 03 Nov 2017 |
| Sit | New York Times | 04 Oct 2017 |
| Go unused | ||
| Sit | ||
| Gather dust | Newsday | 14 Aug 2016 |
| Do nothing | Wall Street Journal | 17 May 2016 |
| Remain in mothballs, say | The Chronicle of Higher Education | 18 Dec 2015 |
| Remain in mothballs, say | ||
| Remain in mothballs | ||
| Remain in mothballs | ||
| Get no use | ||
| Get no use | ||
| Just sit there | ||
| Remain at rest | ||
| Be at rest |