Yeah the rice is only going to get tiny particles of rice inside the device and otherwise not assist in drying out even slightly making the issue worse
Stuff like silica gel can work fine, but you need to use a lot of it in an enclosed space (even better if you can circulate warm air through it) but, yeah, airflow does work just fine pretty much anywhere.
Immediately remove the battery/power, then use a bunch of silica gel packs that have been dried out instead of rice: They're commonly available and won't get into things and cause problems down the road. Alternately, just take it apart as much as you can and set it in front of a fan to dry out.
Keep in mind, it might be too late but it's worth a try.
If you really want to try and save it and are tech savvy, try tearing it down and giving it an isopropyl alcohol bath but if you aren't, it'll do more harm than good. Keep in mind ISO can damage some parts.
Assuming it is a paper notebook, the determining factor is how soaked the pages are. If it is too wet, they may start to meld together making the notebook unusable.
The best thing to do is to actually heat up the book. I've cooked mine in the oven at very low heat, which allows it to dry out fast. My dad does a variant of the rice method for wet books where he fills a bag with rice and then places it in the sun. However, if the notebook is too wet and the pages are sticking together, doing either of these will instead turn your notebook into a solid block of wood. Instead, your best course of action is to try and fan out the pages by individually peeling them apart, then putting the splayed-open notebook somewhere moderately warm where it can slowly dry out under your careful observation.
act as a short circuit, since it's conductive and spreads over everything rapidly
leave residue/corrode, coincidentally doing the opposite by blocking circuits over time
You can extract all the water, but unless it's producing vague bios errors, there's no way of knowing what has failed. Similarly for corrosion, you would need to thoroughly pull apart and clean off residue.
There is, however,.a chance everything's fine like the device wasn't powered on at the time to have voltage short circuit across components and just needs a clean.
So, I think your success rate with drying out notebooks would indicate that it's more effort than it's worth.
It's when corrosion sets in things get unfixable. If you get to its insides before then some IPA and a decent scrub with something like toothbrush can clean it up.
The exception to this would probably only really be the battery and yeah that should be disconnected as the first step.
I’ve gotten coke on my nvme drive, after dunking it in distilled water couple of times and drying at 60 it worked 👌 the main thing which might fry anything is the case when voltage controls from battery/wall get bypassed. The chips in production are washed with deionized water on some steps, no problem. The structural damage comes from 7v+ voltages and prolonged exposure. (But something like data integrity can go to shits, that’s just chance. P.s. Obviously, you can’t heat up or wash battery).
I know of this one time (last year) a window that was purposely kept shut was opened by a visitor and the notebook was rained upon. completely soaked. Kept in rice for about a month (changing the rice on some schedule), it booted up fine for a while. then died completely after a few weeks.
I usually find that ballpoint pens work poorly if paper has gotten wet, if it dries though you'll probably be able to keep writing in it, best to throw it out though tbf
I don't remember what I did afterward anymore, but I did once have a laptop get wet getting caught in a downpour in backpack that wasnt waterproof. It needed a new power supply.
rice is only going to absorb water if it's directly touching the water. if it were good it absorbing humidity, you wouldn't be able to store it almost indefinitely in burlap as we've been doing for centuries.