We have used old milk crates for nesting boxes, nesting material and fake eggs in the boxes to encourage laying in nesting boxes. Sorry you don't want fertilized eggs, cause the rooster could be your best friend to keep your flock in line and get them to roost in your roosting area at night, keeping them safe without all the work and you won't have to have an easter egg hunt every day. Would also allow you to clip wings if necessary.