I've used KAIO and ZAIO on our vanity tops,but not on the toilet! I;ve used KAIO on our bathroom mirrors before,and I use Stoner's Invisible Glass to clean them all the time. I use the Stoner's on our kitchen door windows too.
I do guitars, drums, and cymbals and drum hardware with a lot of OTC brands. The guitars and basses on this next tour are getting a coat of DGPS though or Max Wax
The drums are getting Plexus. Which don't know if anyone has ever really looked at this, but yeah the drums are wood, but the shell overtop is plastic, no paint, so Plexus works great!
I've polished/waxed my cell phone before when it was new. It made the white pearl flake shine nicely. I think I used to QD it every week, too. I have dropped it many times since then, it is loaded with nicks/scratches, etc. I really need a new one.
I've used 425 on my bedroom TV, and ONR on a few random things.
Last week I did my kitchen applicances, toilet seat cover and faucets throughout in my new appartment with KAIO. Next up: shower walls, probably will try a different LSP there
I used Mirror Glaze Medallion to clean up my bathroom sink and toilet. I had about a squirt or two of #20 left so I sealed the sink and toilet also. Next time I may try an APC or degreaser to clean up most of the grime then try Werkstat Prime Strong and see how that works. Maybe top it with Acrylic Jett. I just hope I don't slip off the toilet afterwards.