A Completely Unorganized dumping ground at the moment.

► Stock Photo Sites

EveryPixel
Awesome Stock Resources - "A curated list of awesome stock photography, video and illustration websites."
PNG.is

► Stock Video Sites

Vidsplay - royalty free stock video footage

► 3D models

[Private tracker] CGPeers - Great source for 3D models. Easiest way to join is through MAM. Requires 6 months old account and 1TB upload. Private trackers guide
3Dpirate - Can use cocoleech.com to extract premium links for nitroflare.