Probably should have started one of these a long time ago but better late than never. I'll just start with some recent stuff and then proceed from there.
Power armor voxel sculpt:
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Here's a base mesh I used to build from, mostly using the copy brush to grab voxels from for specific parts:
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... over to zbrush, will probably finish it off in zb.
And the curve rig I used to block it out: