Related Clues:

• Think pieces
• Thought originators
• Think tank nuggets
• Fancies
• Head sets?
• They're sometimes wild
• Newspaper opinion pieces
• Head starts?
• Some newspaper essays
• 'Any ___?'
• ''Don't get any funny ---!''
• Think tank output
• 'Gibraltar may be strong, but ___ are impregnable': Emerson
• Concepts
• Brain waves