Microphone Blocker - Mic Guard - Apps on Google Play
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
Device Microphone Blocker 115841
Mic-Lock USB C Black Metal - Mic-Lock · Mic-Lock
Microphone Blockers can be custom printed with your brand details.