HELP GETTING ANY GOOD CONTENT INTO SANDBOX IS ALWAYS APPRECIATED! WE COULD ESPECIALLY USE MORE MODELS BUT DO NOT HAVE THE MANPOWER TO CONVERT THEM ALL OURSELVES. PLEASE SHARE WITH US

BE SURE TO ALWAYS GET AND INCLUDE THE LICENSE INFORMATION FOR YOUR PROJECT EVEN IF IT SAYS FREE. YOU NEVER WANT A CHANCE FOR SOMEONE TO SAY YOU ARE RIPPING THEM OFF OR VIOLATING A LICENSE.
Free Blender Models:
http://e2-productions.com/repository/mo ... downloads/ (Official Blender Repository)
http://www.blendermodels.org/
http://www.katorlegaz.com/3d_models/index.php
http://www.dougturner.net/blendersite/3d.html
Free Non Blender Specific Model Sites:
http://www.psionic3d.co.uk/ (Models not in .blend, textures & sounds as well)
http://www.turbosquid.com/Search/Index. ... page_num=1
(NOTE some turbosquid pictures and models might not be appropriate for kids! Some .blend files, some other formats)
http://opengameart.org/ (Awesome site! Includes textures and concept art as well! Thanks Offtools!)
Textures:
http://opengameart.org/
http://www.psionic3d.co.uk/
http://www.dougturner.net/blendersite/index.html
Sounds:
http://www.freesound.org/
http://opengameart.org/
http://www.psionic3d.co.uk/
Music:
http://www.jamendo.com/en/ (be sure to check the album license, some can't be used commercially)