Plastic in a purse

• ROOM SERVICE ___ TRICK KNEE
• Visa, e.g
• One way to pay
• Cash alternative
• Plastic explosive planted next to Queen, perhaps?
• It's returned after someone swipes it?
• Plastic wallet item
• Note that will give you a thrill?

Wiktionary Word definitions in Wiktionary
n. 1 A card, resembling a credit card, used for payment — especially for some specific product or service, as with a phonecard. 2 A credit card.