Raise your Terrariums humidity level with an ultrasonic reptile humidifier
Ultrasonic humidifiers or foggers work by vibrating a metal disk at ultrasonic frequency causing water above it to form tinny cool mist droplets that form the fog cloud.
Most reptiles require some level of humility in their terrarium and an ultrasonic fogger its the best way to archive that,especially tropical lizards,geckos, frogs,amphibians and snakes.
Your first option should be an Exo Terra Mini Fogger this small fogger is very affordable and will be suitable for small to medium terrariums.Just place it inside a water dish, make sure the sensor its underwater and you should see fog start to come out.
You can additionally connect it to a timer and have it turn on and off during the day and keep your humidity level ideal for your reptile.
Your second option if you are looking for something that can cover a larger terrarium or just want a better fogger should be the Zoo Med Reptile Fogger Terrarium Humidifier It comes with an adjustable fog output control allowing you to control the fog flow,and a 1 litter water reservoir so you dont need to add water all the time.
A reptile fogger will not only help you maintain proper humidity levels in the terrarium but also create a pleasing aesthetic effect for those how love to make there terrariums look more naturalistic.The combination of live plants a water feature and a fog cloud can make any terrarium look amazing.