Arduino is a wonderful platform to experiment with to learn electronics and coding. The DSTIKE Bad Glasses is a pair of Bluetooth Glasses with a black box on the side that supports Arduino programming. It has an Atmega32u4 inside, which you can use as a Bad USB.
The DSTIKE Bad Glasses connect to your phone via Bluetooth. You will be able to listen to music and answer calls. The device is Arduino IDE compatible.
[where to find it]