Things I'm almost certain exist in the mundane world of Star Trek

Special facial cleansers for Klingon head ridges. You gotta think there's some sort of vanity after you wash the blood of your enemies off, and I imagine Klingon skin oils with all those nooks and crannies require something stronger than Dove bodybar.

Hair regenerators. If your barber can cut your hair, and a doctor can regrow the skin of a cut, your barber should be able to wave a wand and have you go from buzzcut to mullet like a video game character creator.

micro-replicators programmed exclusively for one food or drink. Like, this is my water bottle that's programmed to be perpetually full of Dr. Pepper.

phones are probably still a thing. The ubiquity of phones has proven that, entertainment aside, having a constant access to information when not onboard a ship with a voice activated computer, probably has some necessity and advantages. Yeah they're probably like the 31st century com-badges, with a holo interface, but still.