Tongue scraper. Get a small metal one, will completely remove bad breath and stuff like garlic breath. It also removes cakes of plaque on your tongue sometimes. I've always brushed my teeth, but holy cow the tongue scraper helps. Better than mouthwash.
I've used one for the past 15 years and I can wholeheartedly agree. This thing will most likely outlive me (I don't think any future children would want it as part of an inheritance though). Your sense of taste will also improve because your tongue isn't covered in gunk.
honestly I got one of these and ended up going back to brushing my tongue. maybe I am like more thoroughly brushing my tongue than other people or something but it never was as clean from a tongue scraper as from brushing
I was never able to get much off my tongue with a toothbrush. Your tongue is kinda like velcro with fuzz stuck in it. The tongue scraper kinda depresses the velcro so you can remove the fuzz (plaque). If your tongue is where tinted white, that's plaque, which can be scraped off. Also removes stuff like garlic or oregano breath pretty well.