You mean besides make a phone call?
You can:
-- get a wake up call that will not fail. Think about that, yeah.
-- start a conversation when a visitor asks, what is it, a souvenir from Disneyland?
-- bash someone in self defense (I would not want to be hit by one, for sure) and still call 911 with it after you put him down.
-- theoretically, at least, call 911 after a nuke attack. Who knows, about then the president might be the only one left in the country able to talk to you on a telephone. Call him up.
-- call Putin and ask him if he has Sir Walter Raleigh in a can.
-- completely ignore it.
Can you call and get the time, still?
I used to do that over and over and over when I was 5yro. It was the coolest thing, ever.
Given that my $20 feature phone and $35/month Net 10 subscription serve me well for years, expensive stuff does not impress me.
My $40 tablet serves me since early '17 -- no need for expensive stuff.
My feature phone has 4 GB memory -- enough to browse Internet and forums. There are lots of amazing and cheap gadgets.