Print files for my 3D printed fry tray / breeding box are available for personal, noncommercial use through Patreon. See the video linked below for more info on printing, set up and use of the trays.
I have begun to produce and sell a number of complete fry tray kits through Etsy (link below, US Shipping only). I have also authorized https://handpickedaquatics.com/ to produce and sell the trays in Australia.