Finished off the sock model and got him rigged over the last few days, took a couple of goes to get it right but I'm pretty happy with it for now. To test the rig and to dust off my animation hat, I've made a start at a walk cycle. Still needs refinement but the basic mechanics and timings are there.
Sock Horse Rig
(Apologies for the image quality, MS paint is a poor substitute for Photoshop)
Sock Horse Walk Cycle (w.i.p)
Sock Horse Walk Cycle (w.i.p)