Historical clue formulations

• Plates, e.g. — 2025-06-13
• Shapes of Frisbees and tiddlywinks — 2021-05-10
• Some storage places — 2011-02-06
• PC storage units — 2010-11-30
• Computer data holders — 2006-07-31
• They sometimes slip — 2006-05-04
• Harrow blades — 2005-05-15
• Compact data holders — 1998-12-16