List yourself on the market for free. I haven't done this before, but let me know if you have and had some success.

• Power to Fly - an organization supporting women, trans, gender non-conforming, and non-binary persons looking for work. You can upload a profile, but they also have a lot of resources
• Diverse Creatives - Join this list of BIPOC creatives
• Amazing Designers List - community-initiated talent base (supported by InVision)
• Epic Jobs Resumés
• WFH Freelancer - get listed
• Freelancers List (via @iPullRank, Brand Consultant, on Twitter)
• Working Not Working Creatives List — a list for traditional creative agency-style work, but might be a good place to get your name out there.