does this exist?

Here's something I could use: small spray bottles of various colors of edible food coloring. I'd stick the nozzle in a bottle of pills and coat all the pills inside. The coating would need to not come off when I handled the pills.

That way, when I sort out my pills each week for my timed dispensers, I'd be able to tell the difference between all the tiny round white pills. Some of these pills used to be colored, but most of them are white now. Sometimes I need to not take a specific pill on a specific day for a specific reason, and I need to be able to identify it.

Also in the potential usefulness department, and described in a newspaper article, an A.I. that specializes in writing appeals letters for health insurance denials. I belong to an all-encompassing HMO, so anything ordered for me is automatically covered, for which I hope I am grateful enough, but I wonder if something of that general kind would have been useful when I needed to file an appeal of a flat unexplained statement that my pandemic unemployment relief had been ruled ineligible, they didn't say why. I'd sent in my 1099 for the pre-pandemic year to prove I'd been employed, which is what they'd wanted me to demonstrate, but that was judged insufficient, again without saying why. After much searching, I found a lawyer who suggested that my tax return, bank statements, payment stubs (which I still had) and a boilerplate affidavit from my employer (who was happy to provide it) would help, and they did. But I needed someone to advise me on that.