I have two very small tiles that need repair. Anybody know of good product that works well to simply apply and forget?

Watching. I have several that have popped off and it pisses me off every time I see it, then forget it about it again until I go back outside.

https://a.co/d/82pHWYm

Make small batches to work with. Measure precisely as the instructions say. Be sure to scrape off old plaster from tile and also wall area where you are patching.

Had 12 tiles pop off here in dallas with the big freeze a few years back. Used this stuff to place them all back. No one could tell where I did the work the summer when we opened the pool up.

Edit: they make different size containers of this. I'd recommend getting the one pounder. It doesn't go bad, so you have it on hand for any future repairs as well.

Good luck.