Possible Clues:

• Listen; it's shiny decorative stuff
• Loss to Scots of what is showy but of little worth
• Listen (anag) - something cheap and showy
• Shine to boy up to make him lousy
• Let's get glittering around in this
• Enlist the glittering decoration
• Lent is perhaps silent, but also lets in a show of gaudiness
• Glittering metallic substance in strips or threads
• Tree trimming
• Yuletide buy