Use these image groups for inspiration for your pattern. Patterns on Flickr will show you patterns in the natural world while Artstor will show you ways pattern has been interpreted by other creators.
Are you tired of searching "pattern"? Try using related keywords. These can be synonyms, specific artists/subjects, or places you might find patterns. Try these or come up with your own!
Try the following tools for extracting hex color codes and color palettes from uploaded images as well as building color palettes from starter colors:
Screenshot via Coolors
All done? Love your pattern? Submit it to The Pattern Library.
Study for Fox I by Anni Albers via Artstor