If you like me had an iPod mini and got the dock for it left over, and now bought a iPod nano and quite frankly think that $29.00 is overkill for a dock this is for you.
Is it hard?
It's quite easy, the hardest part is to re-shape the shell of the dock to accommodate the adapter and all that needs is a dremel, sandpaper, a file and some time.
iPod Mini Dock
iPod Nano Universal Dock Adapter (comes with the iPod nano)
Dremel or saw
Gluegun or other good glue
Less than 30 mins
Step 1: Opening the iPod mini dock
The white upper part is kept in place with teeth on all 4 sides, you need to gently pry the white plastic outwards to free it from the grooves, something flat and hard is ideal, dont pry too hard or you will hurt the plastic.