Bantam versions of dual-purpose/layer breeds would be nice, or maybe a small standard laying breed. All the bantams I've seen have been cochins, silkies, or OEGB (we picked up a couple!), and I'd like a useful kind of little chicken (if those exist!). BF wants also a "cool looking" and preferably blue but not weird (silkies, frizzles, turkens ) bird. Kinda specific but also pretty vague, but we're still pretty new to chickens and doing research.
There are bantam sized Orpingtons but like anything miniature the original breed was crossed with a small breed to make them smaller (like toy sized dogs) so you do change the original breed characteristics a bit during downsizing.