Business Card Holder
From Amazon
Durable RFID SECURE Wallet in Charcoal | Pack of 1 | Holds Upto 8 Credit, Debit and ID Cards | Protects at 13.65MHz
Conrad Electronic
Durable 230958 RFID SECURE DD/CC/business card case (W x H) 75 mm x 102 mm Anthracite grey Plastic