OpenGameArt is a new website to me, but it seems to have some very useful goodies on it for iClone users. All items are Creative Commons, and all models are stupendously low-poly.
Like this new 32-object sci-fi ‘interiors’ prop pack. It imports into 3DXchange as a single 788kb .obj (at an amazing 8,000 polys for the entire set!). Then you have to “deselect all”, and re-select the exact prop you want, then export to a .vns Texturing is up to you, too. It’s all a little fiddly, but because these are Creative Commons there’s nothing to stop someone from importing, texturing, maybe adding a few walls and screens, and then putting them all into a free iClone project file.
OpenGameArt also has audio FX, textures, even things you’re certainly not going to find on 3D Warehouse — like rigged characters and facial animations. Some items are in the Blender .blend format. (inc. a basic Blender biped rig), and open in the free Open Source Blender software.
But even just for simple props, there are some nice items here. Such as this “old oak tree”, as an .obj with three textures…
The site is currently seeking to raise money via donations, to pay for the commissioning of items such as higher-poly bone-rigged 3D humans. Which would then be given away free, under a Creative Commons licence. But presumably these would still be game models, and thus may still be suitable for export from 3DS Max to iClone.