For travel I would actually consider smaller non-networking options such as Philips Imageo. You can get up to 20 hours per charge and they are very practical, e.g., each out, grab and tilt to turn on or off.
This one is glass in the latest version and there is also a set of six smaller plastic tea lights, plus a larger pair that change colour via tilt.
I would also consider just getting a colour Hue bulb for travel as the bridge is very small and also DC. But I feel strongly that the new White Ambiance is definitely not warm enough for a good nightlight.