Canva—create images with text overlays and other graphics

Infogram—create interactive charts and infographics

Over—create images with text overlays on phone and tablet

Noun Project—inexpensive icons

Icon Finder—inexpensive icons

iStock—inexpensive stock photos and illustrations

Pictaculous—create color palettes from photos

Flickr—photography in the creative commons (see attached screenshot for how to search creative commons photos)

GIFmaker.me - Create and generate GIFs

Colorstock—stock photography featuring people of color

Pixlr