Mic-Lock USB C SoundPass with Secure Charger Black - Mic-Lock · Mic-Lock
Amazon.com: Microphone Blocker
Microphone blocker - Wikipedia
Amazon.com: Mic-Lock 3.5mm for Headphone Port - Microphone Audio and Data Security - Privacy Protector for Laptops, Smartphones, Tablets, and Computers (Gray, Single Pack) : Electronics
Mic|Bloc - Microphone Blocker. Privacy shield for internal microphones. Made from metal and silicone for 3.5mm audio jack