My stutter is much much better now so I haven’t ever tried this myself, but I’ve often wondered if focusing some brain cycles on something else would help reduce or prevent the stutter. Those items you listed make a lot of sense to me. I wonder if more people shouldn’t try them. I recently purchased a small indoor trampoline and found myself wondering if it would even be possible to stutter while jumping on it while breathing in and out in sync with each bounce. This could maybe actually be something that people could use at home, at least, to help talk with their family members if that is an issue.