Pattern Monster - Pattern Monster is a pattern maker app to create vector patterns for your projects
Humaaans - Mix-&-match illustrations of humans with a design library.
PatternPad - Create beautiful geometric patterns
DrawKit - MIT licensed SVG illustrations, in 2 styles
SVG Stripe Generator - SVG Stripe Generator is an easy-to-use tool that enables you to create unlimited stripes and then download them to the device.
unDraw - Open-source illustrations for every project you can imagine and create.