Possible Clues:

• Have to be paid about fifty as the temperature rises with them
• SOS lights
• Some warnings
• Blazes of light
• For them one has to pay about a flaming pound
• Erupts angrily when given bell-bottomed trousers
• Some emergency signals
• 'They're back!' and are highly illuminating
• Picked up knacks to make legwear
• Emergency lights