So, the past few years when we take long trips in the car, I've setup a small wireless network with attached storage so the boys could stream movies to their tablets. Each year I did this, I changed how I did it.
One year I had an RPi serving up the content through a wireless router. Another year I had a Linksys AC1200 with attached storage serving it up. Both of those solutions required an inverter and a lot of space.
My new solution, thanks to a friend pointng out a router, is to use a HooToo TripMate Nano, attached storage and a USB power pack. Testing shows that I can run this setup for about 20 hours before a recharge is needed. And the recharge takes somewhere from 8-12 hours. But still... it works great. No more bulky router & inverter... sweet.
One cool thing using a router like this is that if the hotel has wired internet, I can bring my router in and make my own wireless network and not have to join the hotel wireless on each device.
Now if I could only afford a 1tb jump drive it would be even smaller :)