Historical clue formulations

• Some lighters or pens — 2025-03-13
• Some disposable razors — 2024-07-20
• Certain lighters — 2017-06-08
• Disposable lighters and pens — 2017-03-21
• Popular ballpoints — 2015-05-11
• Inexpensive writing implements — 2014-04-19
• Zippo alternatives — 2014-03-23
• Some 27-Down — 2014-02-01
• Pens sold in 10-packs — 2011-01-05
• Alternatives to Zippos — 2009-10-03
• Popular ballpoints — 2009-09-08
• Some ballpoints — 2007-11-20
• Popular writers — 2005-12-02
• Popular pens — 2005-08-31
• Certain pens — 2003-02-21
• Some ballpoints — 2000-06-16
• Popular pens — 2000-01-11
• Writers with caps? — 1998-04-16
• Some pens — 1996-11-17
• Some pens — 1996-05-29
• Some ballpoints — 1995-06-18