olfactory:

labrets are traditionally lower than lip piercings. my labret is centered between the bottom of my lip and the top of my chin. because of the lower nature of the piercing it’s less common to see rings worn in them. not to say you can’t do it. but more often than not you’ll see a labret stud being worn. they also used to make funky looking barbells with a straight piece that goes through the piercing and then the top comes up and over your lip looking like a normal circular barbell, though I can’t find any still available. there’s also a piece called (if I remember correctly) a fishtail. this is simply a ball on a long rod that is curved to go in your mouth and settle between your gums and lip. lastly the do make labret plugs though, of course, you have to have a sizable piercing to make that work.

however, I don’t advise getting a labret piercing. I’ve had trouble with mine wearing away at my gums, and gums don’t grow back.