Tubs are suggested, but many use 10g or 20g glass tanks, which are more difficult to maintain temps and humidity levels.
For Glass tank you will want:
UTH for hot side
Thermostat to plug the UTH into
Digital Thermometer with at least two probes (for hot and cold side)
Two identical hides (for hot and cold side)
Water dish for center that won't get knocked over
Substrate (aspen, cypress, etc.)
A mesh screen topper