I bought a Waterpik flosser thing a couple of years back (maybe a few years back now) and it has been sitting in my cupboard still sealed until this very day when I finally found myself curious enough to try it out. Turns out there's actually 2 of them in there! One "Ultra" and one "Nano" for smaller bathrooms/travel. I must have been in a very interesting mental space when I bought it because I had no idea.
It's this:
I was sceptical how it could be strong enough to floss just using water in a benchtop machine but it packs a bit of punch! Even made by gum bleed in one spot. I can't imagine a scenario where I'll take the smaller one traveling so I don't know what to do with that. Maybe my parents would like it. Anyway, exciting stuff.
You do need to be careful with them as they can cause damage. I have one and when I was using it regularly I found the lowest setting to be sufficient.
Dental people I’ve spoken to are relatively meh about them.