Humaaans is a free library to mix-&-match illustrations of people. You can customize their positions, clothing, colors, and hairstyle. You can add scenes and use the power of libraries to make it your own.
Available on InVision Studio and Sketch.
absurd.design is a project which comes with a set of free surrealist illustrations for app or landing page messages, presentations, articles and more. The main idea is to give people a chance to think and spark their creative imagination and artistic vision.
unDraw is a constantly updated collection of beautiful svg images that you can use completely free and without attribution.