Amazon.com : K&F Concept Lens Mount Adapter Compatible with Nikon AI Lens to Sony NEX E-Mount Camera Body : Electronics
K&F Concept lens adapters for Nikon Z-mount - Nikon Rumors
Amazon.com : K&F Concept Lens Mount Adapter Manual Focus Compatible with Canon EOS Lens to Sony Alpha Nex E-Mount Camera Body,Compatible for Sony NEX-3, NEX-5, NEX-5N, a6000, a6500, NEX-C3, NEX-F3, Not Auto-Focus :
Manual lens adapter ring PK/DA-L - K&F CONCEPT
K&F Concept Nikon Z lens adapters start shipping on January 22nd: Digital Photography Review