What is a good type of night light for elderly parents?

You could try switching the bulbs to CFL's or LED's too.

We have battery operated motion lights in bed room, living room, and bathroom. I changed the night lights incandescent bulbs to LED (been burning for about three years now) We have two ceiling lights that have been changed to LEDs (have been on continuously for over three years now) and will change others as the compact fluorescents burn out.

I use clear Christmas lights for my Moms room, she always has to have some light. Maybe try that? They seem to work perfect for our need.