You can add a few "pay on death of" names and cover a bundle of money.
My bank gave me a brochure with all the details.
I've added a few names, a few twist and turns and covered way over the 250 amount in the past. I didn't know about this either until I had a need for the info.
I spent most of my life under any kind of limits they've ever had, probably dating back to the great depression, if you know what I mean.
But I must say, it was nice for once in my life time, to reach a place where I needed to know these little details.