Humanotion - Free avatar pack, perfect for Notion
Minimal Avatars - Create minimal, unique and playful avatars for free
Humaaans - Mix-&-match illustrations of humans with a design library.
Boring Avatars - JavaScript library to generates SVG avatars based on text.
TinyFaces - Free crowd-sourced avatar gallery including Sketch plugin
Avatar U - An avatar, for all occasions and for every mood