I'm looking at the watch bands, possibility!
The Ditto caught my eye, but at $40...
https://tinyurl.com/yabnbngd She has a case but doesn't wear it like the tiny old phoneshe had.
We already picked the loud old style ring.
I like the hack thing, but that will run $50.
We talked about a waterproof case, but then she saw the price.
Speaking of waterproof, I found a phone floating near my boat.
Picked it out rinsed it off, and looked for mom, no mom, so
I made a couple of calls and some started explaining whose phone called them,
it finally clicked, I knew the guy. He had a waterproof flip phone.
And it worked as it should.
I've been experimenting with resonant pvc tubes to make it louder.
I could set up a shelf to slide her phone on with the tube above it.
I get a volume increase, just don't know if it is enough.
For those interested, I found an online spectrum analyzer,
plugged a mic in and the spectrum is below. It alternates between 1000Hz and 2400Hz.