Advice for reducing harmful stimming?

One of the most common ways I stim is by chewing on things, I’ve done it all my life. This is a problem because I often find myself chewing on things that I really shouldn’t be because the texture is nice, usually plastic. And I don’t mean a little bit of gnawing on a pen cap, I mean that if you give me a pen I will basically rip the thing apart with my teeth until the ink inside starts tasting bad. This has also lead to me grinding my teeth a lot when I’m not chewing on something. It isn’t an involuntary thing, I can consciously force myself not to do this, but then I also have to force myself to not grind my teeth, which is distracting from any work I’m trying to do.

Does anyone have advice for dealing with this sort of thing? Will my brain learn to stop doing it if I force it not to for a while, or will should I pivot to embracing it, but chewing on something safer instead? Thanks in advance.