Ghostship's eyes are very good. They're in a thread somewhere on this forum, I don't remember which but you can download them from the free stuff: https://www.renderosity.com/rr/mod/freestuff/-/86843

Lots of skin experiments if you read through the threads, but good results will depend a lot on the maps you're using. I don't think you'll see store products that really leverage the new P12 functionality until P12 has stabilized.