It may be obvious to you experienced folks, but I personally have a lot of catching up in using Blender effectively, and I want to get started quickly.
https://free3d.com/ has a ton (16,139) of objects, some already in FBX FREE to download !
I havent done it yet, but a little tweaking and objects should be Sansar ready...
Hope this helps..
They will have to add a category just for US ~ I can forsee that now HA !
also, don't forget Our Store ! Gracious Folks have a Ton of free objects for your creations !