I have a first gen. iPod nano dock that was just lying around the house. It is now useless because I lost my nano a few years ago. So, I was iPod-less for a sort time. After the ipod-blues... I got the iPod Touch. Having no dock for it, I had the brilliant idea of reviving my old lonely nano dock. Instead of buying another one, which is like $$.
Here's how I did it.

Step 1: Things You'll Need.

Here are your materials.

- Ruler
- pencil
- sand paper
- swiss knife / leatherman
- iPod nano dock

Step 2: First

Pry off the nano dock with the swiss knife/leatherman. (put some muscle in to it now)

Step 3: Next

Put the part with the circuit and connections aside for a while.
Working on the other panel, measure out the dimensions of the ipod touch and place those measurements to the nano dock, marking it with a pencil.

Step 4: Then

Use the dremel/rotary tool to cut along the lines you measured and marked.
Sand the edges until it's smooth, so you won't get any scratches on your ipod when you put it in.