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I want go give this guy a shark head with a bulky neck, but I want it to be at least a little articulated. Looking at various sharkman toys for inspiration has gotten me nowhere, since the necks on those never articulated, probably because it's a hassle to do so.
Does anybody have a good suggestion? The best I've come up with so far is to try and do some kind of double-balljoint or maybe some kind of multi-ribbed system 3D printed fish or snake toys often have.