Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs

craigslist - craigslist provides local classifieds and forums for jobs, housing, for sale, services, local community, and events

Control Illustrations - 108 free flat illustrations with customizable characters

Bedpage - Bedpage is a classified ad posting a website that comes as the alternative to Backpage and offers almost all the major services to post for multiple categories.

Humaaans - Mix-&-match illustrations of humans with a design library.

Facebook Marketplace - Marketplace is a convenient destination on Facebook to discover, buy and sell items with people in your community.