Clip on Headphones Bluetooth V5.3, Open Ear Earphones Wireless with Earhooks, Ear Clip On-Ear Headphones, Sports Headset Bluetooth with 4 Microphones, Noising Cancelling/Long Battery Life(Black) - Newegg.com
Celly Snail Clip On 2 Retractable Wireless Bluetooth Headset Ασύρματα Ακουστικά - White
Audio Technica ATH-EM7 Headphones | LP GEAR
Audio Cable to Alligator Clips (2.5mm) - RobotShop
This clip-on audio receiver turns any wired earbuds/headphones into wireless ones - Yanko Design