As many of you know, since GW stopped producing 10mm figures, I have started making lists that map warmaster troop types to miniatures that are widely available today and posted them on my blog.
for Undead Tomb Kings here is my list and feel free to either send comments on my blog, or use this thread to suggest improvements, alternatives etc
http://www.athens-fantasy.gr/2013/07/undead-warmaster-with-non-gw-miniatures/Skeletons
Kallistra Skeleton Warriors (301)
Magister Militum Skeletons with Hand Weapons (FSK001)
Magister Militum Skeletons with Spears (FSK002)
Skeleton Bowmen
Kallistra Skeleton Archers (303)
Skeleton Cavalry
Kallistra Skeleton Cavalry 302
Skeleton Chariots
Kallistra Skeleton Chariots (305)
Carrion
Kallistra Giant Vultures (306)
Bone Giant
Wargods of Aegyptus Tomb Queen Crypt Lord (WGE-129)
Kallistra Zombie Giants (310) – not yet released
Microworld Skeletal mammoth (6mm but perhaps the right size?)
Microworld Bone Giant (6mm but perhaps the right size?)
Sphinx
Wargods of Aegyptus Undead Sphinx (WGE-704)
Skull Chukka
Kallistra Skeleton Ballistae (304)
Bone Thrower
Haven’t found something yet.
You could use any bolt thrower out there and replace its crew with skeletons
e.g.
Kallistra Dark Elf Bolt Throwers (703)
Tomb King General
Kallistra Undead Command (309)
Liche Priest Wizard
Kallistra Undead Command (309)
Zombie Dragon Mount
Microworld Bone Dragon (6mm but could be the right size?)
15mm.co.uk Jabberwock This would be awesome but it might be a bit too large? Looks like it would fit on a warmaster base.
Liche Chariot Mount
Kallistra Skeleton Chariots (305)