Hey! I just tried it and it works fine. In fact, the prop figure didn't even have to have two parts (as mentioned in the linked thread). Here's what I did: 1) Put the prop figure in the hands of the character. 2) Turn IK on for both hands of the character. 3) In the Hierarchy Editor window, drug both hands under the Body of the prop figure. That's it. Now when I move the body of the prop figure, the character's left and right hands and arms move with it. Thanks to Geep and Numanoid.