Somebody posted this nightlight in a thread about various things people find useful quite a while ago. I bought it and have used it on numerous trips. It's great!
https://auvonhealth.com/products/auvon-rechargeable-mini-motion-sensor-night-light-led-stick-on-closet-light-with-dusk-to-dawn-senso
Being able to put it anywhere you need it without needing an outlet is the main plus. It also lasts a long time on a charge. I have used it all night, every night, for a week at a time. I don't use the motion sensor, I find the lower of the 2 "on" settings provides the right amount of light.