A stackable egg tray designed for a specific basket to hold 30 eggs (See pictures) I included a 2x3 and a 3x3 ready to print and also a single one in case you want to start with it and customize. I also included the link to Onshape design that you can copy or export to other formats.

No support needed.

2x3: L 93mm x W 138mm x H 32mm 3x3: L 138mm x W 138mm x H 32mm Single: ext diamter: 48mm , Height: 32mm

Onshape Link : You can use this link to copy or export to different format so you can customize it. https://cad.onshape.com/documents/db5ea0e2296e3cf5a941eb26/w/ae7dec6ca05df69c036e100d/e/06586e5e9c9bf2071e998c87