I travel a lot for work, and I currently use a Roku Streaming Stick (2017) while staying at hotels. While the Streaming Stick works great, the built in speakers for most hotel TVs are really bad. I considered using a Streambar for better sound, but it was too big to carry in my luggage. My ideal Roku would be a "Streambar Mini," with the following features:
Size of a portable Bluetooth speaker (e.g. Anker Soundcore, Tribit Xsound Go)
Included HDMI cable in box
HDMI ARC, for better sound while watching hotel TV channels
Remote with volume buttons
"Zoom display mode," for hotel TVs with overscan that can't be turned off
What would be really nice if such a device could be powered off a 500mA USB source, so it could be directly plugged into a TV's USB port for power.
Might be better for it to come with a beefy power supply (plug into wall, ideally with a standard figure 8 power cord), and have the box include a USB hub capability so it could charge a phone at the same time when the phone is set up for hotel mode to make Roku connect.