Here is the progress so far on my TC9 entry, at least the A model:
The A model is log skidder with articulated steering, a movable arm, and a closing/opening claw. I do not know what I will do for the B model, but probably something else with articulated steering, because I don't have many steering elements incorporated into the A model.
The arm is controlled with the middle knob, the steering with the knob on the corner, and the claw with the gear attached to it.
Here are a few more pictures: