Well here is my cyber paw rig so far. I haven't rigged up up the springs and pulls yet and I need to reinforce the build.

It looks good so far I think

Edit
I thought maybe I should talk about the construction a bit.

In the first pic you see the basic materials dollar store cookie sheets, mini camera tripod legs, a couple rulers and some tin snips

The snips had a rougher time cutting the cheap sheets then I had thought but one used stripes to reinforce the rollers and cut pieces I'd use later to hold the fingers

On my designs for the fingers http://www.furaffinity.net/view/10171913/ I used number one for the fingers and four for the thumb

I cut out 9 pieces (3 each ) for the fingers and 3 for the thumb from my cloroplast before glueing them together into four digits. I therefore used packing tape along the edges to make them seem like one single piece.

I then used dollar store citing mats cut to match each side of the fingers hot glued in place to seal the tape

I bolted the the tripod legs to the frame, and drilled the hinge points on the fingers. I used bottled water caps as spacers between each finger before slowing them into place and bolting down the final framing piece.