What you will need:
- An old heavy internal drive from a computer, for example a hard disk
- Crocodile clips
- Some bendable but rigid wire
- Some screws
- Screw driver
- Soldering iron & solder
Apologies for the poor pictures, they were taken with an iSight.
Step 1: Building the Hands
I choose to use some garden wire which had a couple of problems. Firstly it had a plastic coating that the solder doesn't like to stick to. Secondly when it is holding something it wobbles quite a bit. A better choice would probably be the copper wire you get in some electrical cables that is nice and rigid.
Step 2: Getting the Screws
Rather than using normal screws for mounting drives it would be better to get some slightly longer ones as shown below on the left.
Step 3: Attaching the Hands to the Screws
Step 4: Attaching the Hands to the Base
If you are not sure how to screw a screw look at the picture!