[dawid]

What is the cheapest aux/iPod adapter for a 2006 Honda accord?

 

[hillstones]

Go here:
http://www.logjamelectronics.com

Browse the Aux input converters. Stay away from the cheap no-name converters on eBay.

If you want control of the iPod, there is no such thing as cheap. If you want just an aux input to feed into an iPod, then you will find cheap.