Historical clue formulations

• Cooks up, so to speak — 2024-11-30
• Brainstorms — 2023-11-05
• Thinks up — 2022-11-13
• Brainstorms — 2020-10-18
• Dreams up — 2018-08-26
• Thinks — 2010-07-11
• Has thoughts — 2008-12-01
• Conceives — 2007-04-20
• Thinks — 2005-06-14
• Comes up with something — 2004-03-27
• Conceives — 1999-05-15
• Is part of a think tank — 1998-11-27