What do think about 30-pin Bluetooth adapter? : r/ipod
TURN ANYTHING INTO BLUETOOTH WITH A HEADPHONE PORT! (iPOD CLASSIC with Bluetooth) - YouTube
Can an iPod shuffle be used with a Bluetooth device or is it only compatible with its own earbud cord? - Quora
Bluetooth Adapter,Wireless Bluetooth Transmitter HiFi Audio Dongle Adapter for iPod Classic/Touch,Portable Wireless Audio Radio Adapt, Black - Walmart.com
Bluetooth iPod AUX Transmitter - Stream Music Wirelessly to Speakers/Headphones. Compatible with iPod Classic, Nano, Touch, Shuffle, Mini, Video - READ BELOW: Amazon.co.uk: Electronics & Photo