On my site http://www.duion.com/art/main I'm creating an extensive asset library, with free open source compatible assets.
It is a side project to my open source game http://www.moddb.com/games/uebergame . My plan is to upload the source files of the assets I produce for my game to there, to create a big asset library compatible to Torque3D over time. The game-ready implementation of the assets will come with my game, so they can be used out of the box from my game's Torque3D-build, so it will be easy to play around with them or directly make mods of the game.
If you want to donate some useful content, to extend my collection and are fine with releasing it completely free under CC0 license terms for everyone to use, contact me. I may not accept everything, since I want to keep a certain quality level, to keep out the useless content.