Earphones that look like safety earplugs...Rock on, fellow lab rats (discretely) : r/shutupandtakemymoney
Plugfones Basic Pro Wireless Bluetooth in-Ear Earplug Earbuds - Noise Reduction Headphones with Noise Isolating Mic and Controls (Blue & Yellow): Amazon.co.uk: Everything Else
Amazon.com: MIPEACE Work earplug Bluetooth Headphones, Neckband Safety earbuds-29db Noise Reduction Hidden Headphones That Look Like Ear Plugs,IPX5 sweatproof,19+Hour Battery : Electronics
9 Best Earplugs (2023): For Concerts, Sleep, and Listening | WIRED
Uvex easy-to-insert, multi-purpose earplugs for children