Historical clue formulations

• What might wind up in your mattress? — 2026-08-22
• Curl — 2026-05-21
• Spring — 2025-01-03
• Wind up — 2024-07-04
• Spring's shape — 2024-02-27
• Slinky, e.g. — 2023-01-22
• Spring, for one — 2023-01-12
• It's all wound up — 2022-11-03
• Garden hose shape — 2022-01-26
• Helix — 2022-01-05
• Roll of stamps — 2021-12-01
• Spring feature — 2020-04-05
• Tesla ___ — 2019-07-04
• Snake's shape — 2017-04-25
• "When we have shuffled off this mortal ___": Hamlet — 2017-04-14
• Slinky, e.g. — 2015-10-08
• Spring's shape — 2015-05-04
• Cobra's shape, at times — 2013-02-28
• Hose shape — 2012-07-08
• Spiral shape — 2012-03-28
• Slinky, e.g. — 2011-02-20
• Wind up — 2010-06-24
• Stamp purchase — 2010-03-17
• Thing to wind — 2009-08-16
• Stamp purchase — 2009-02-12
• Rattlesnake's shape — 2008-10-13
• Spring — 2008-04-11
• Electromagnet component — 2007-09-09
• Spring shape — 2007-05-23
• Postage purchase — 2005-12-14
• Slinky's shape — 2004-06-08
• Spring — 2004-04-24
• Rattler's posture — 2004-02-10
• Heater feature — 2002-08-22
• Wire arrangement — 2002-07-14
• Wind — 2001-05-20
• Helix — 2001-02-26
• Kind of spring — 2001-01-04
• Spring, maybe — 2000-10-11
• Shakespeare's was "mortal" — 2000-08-15
• Slinky, basically — 2000-07-12
• Spring feature — 1999-03-09
• Stamp purchase — 1999-03-03
• Heater component — 1998-07-09
• Radiator part — 1996-11-01
• Snake shape — 1995-07-31