This is a module to hold together the parts of an ultrasonic mister. A kit contains the PCB, the ultrasonic module and a water wick, found on online stores such as Amazon or Aliexpress:
https://www.amazon.com/gp/product/B095MZDD1Z/ - Amazon is more expensive they can be found for very cheap!
When printed and assembled, it can be hung from any glass of water or a water bottle when travelling, and powered by any 5V USB source such as a power bank or a OTG adapter with your phone.
WARNING NEVER RUN THE MISTER WITH NO WATER IT WILL IRREVERSIBLY DAMAGE THE ULTRASONIC MODULE (They are very cheap to replace though.)
Designed for printing in any material like TPU or PLA, so there are no fitting tolerances.