In Y the amenity kit used to come as a little zipper pouch. There was definitely an eyemask in there but I can't quite remember the other things that was given as well (maybe earplugs as well on top of toothbrush/toothpaste as mentioned by other posters above?)

I believe amenity kits in Y have gone to hell due to both cost cutting and the introduction of Y+ which prompted them to cut back on Y offerings to create a more sizeable difference in experience.