Possible Clues:

• Source of illumination
• Bright idea symbol
• One should make things clear - not heavy on the onion?
• Easy to raise daffodil that'll brighten your surroundings
• (Electric) lamp
• Clue to cry about - such an illuminating thing!
• Idea, symbolically
• Pale daffodil should brighten things up
• Lamp-socket insert
• Easily disturbed, sob when upset and glower