Every so often I post CC0 3D stuff either over Sketchfab, OGA or both.

OpenGameArt: https://opengameart.org/users/djsedj
Sketchfab: https://sketchfab.com/djsedj

I can't bring myself to bundle these things myself and I often delete them once I post them to OGA (either on purpose or accidentally when cleaning up my temporary folders).