http://www.dakkadakka.com/dakkaforum/posts/list/31.page JForum - http://www.jforum.net
And yes, my first post ]]> http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884759.page http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884759.page GMT
This thread should contain most of them. Off the top of my head I think Puppets of War do some "space helmets" with spikes on the top.

Failing that, you can always get some Warriors of Chaos helmets (or any generic fantasy knight helmets) and add a spike to the top.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884817.page http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884817.page GMT
So, are they based of the Pickelhaube.. or some random tribal hat or something?

I'm planning to make something akin' to a Death-Guard army with quite allot of Spiked Helmets, as I've seen quite allot of cool pictures of Death Guard wearing them ]]> http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884841.page http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884841.page GMT Which is the Pickelhaube as you say.

This site has more confusing info on how it varies due to rank:
http://www.kaisersbunker.com/hp/class.htm
Good luck with the build.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884875.page http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5884875.page GMT http://www.forgeworld.co.uk/Warhammer-40000/Chaos/CHAOS_INFANTRY_AND_ACCESSORIES/DEATH_GUARD_CONVERSION_SET.html
Not sure if those are what you are after, but I use those for my death guard. ]]> http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5887323.page http://www.dakkadakka.com/dakkaforum/posts/preList/542261/5887323.page GMT