All good ideas from those above.
If you can get some good Easter Eggers or true Ameraucaunas (more difficult to find) that lay a green or blue egg, these are likely to be be very attractive to sell. Be aware that from all the hatcheries, you are really getting an Easter Egger, a "Mutt," even if advertised as Ameraucaunas. These Easter Eggers may or may NOT lay a blue or green egg as advertised. nevertheless, they will lay a pretty egg anyway and they are very hardy & friendly. To get true Amerau. & assured blue eggs, you will have to buy from a private breeder.
I keep a specimen flock for my own enjoyment and everybody loves the look of my Buff Orpington hen. The yellow is always attractive and people notice her.