I recently picked up a Maggoth Lord kit and being the cheapskate that I am decided to build all three! I magnetized the torsos so that they can be hotswapped. What's more, not being content to just have swappable bodies, I also made two magnetized sets of legs for them to stand on when they're not riding a Maggoth.
Here's a WIP shot of the armoured legs and the centaur legs. The armoured legs are from an easy-to-build Plaguemarine. I built up a gutplate for him with greenstuff. The centaur legs are a marauder horseman with aBlight King belly and a lot of greenstuff work.
And here's postcrasher High King Itzach bar Itzach. He was my first Chaos Dwarf, and is devoted to Nurgle. While back in WHFB he was just a counts-as Chaos Lord (on palanquin of Nurgle), now he's an Infernal Castellan.