An assortment of products using Zigbee.
My favorite find at this booth is this light switch: it harvests enough energy from the motion of the switch to send the signal to the receiver with no internal battery whatsoever!
It’s a solar powered generator collecting power not only for it’s built in speaker, but also for whatever you connect via USB. It’s the perfect travel-outdoors-energy system, complete with a handle to carry it.
This nicely designed phone charger doubles as a battery backup when removed from the wall.