Transplanting egg carton seedlings:
Simply sit your egg carton on top of the compost and water in.
This picture shows Chives so it’s fine to leave them all together. But if you want to separate the seedlings, it’s easy. Just dampen the egg box with water, and tear to separate.
The beauty of using egg boxes and toilet rolls for sowing seed, is that there’s no disturbance to the roots when you transplant them, so the seedlings will continue to grow happily.