How to make collision shapes for :

Weapons
Go item world objects for armors and similar
Static items?

Still the exporters for Skyrim doesn't work so well for collisions. Collision are mode on the 3d app exported with a the model with a modifier applied to it. The problem is Skyrim have a different kind of collision meshes this time and it seems that over niftools site no one is working on a new exporters.

You can get more info here:

http://niftools.sourceforge.net/forum/viewtopic.php?f=38&t=3433&start=0

Well I started that topic there....