You could draw a simple curve in your favourite 3D-app and extrude it. If you want it to be posable in bryce, you should place a lot of cilinders in a row and parent them to each other and set the origin handle to the bottom of each cilinder. That way you can rotate each cilinder and all the other cilinders parented to is will move along. But it's easier to use a program that has normal animation features, like bones.

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