Panther chameleons may only drink from the water you provide through misting, so it's especially important for them to mist regularly, at least twice a day. All reptiles need access to drinking water , and some species, like Bosc monitors, garter snakes, green iguanas, and Burmese and royal pythons need larger containers with bathing water , while others, such as water dragons and terrapins, also need to be able to swim. Reptiles will both drink from, and defecate in their bathing water, so you need to check that it's clean, and change it regularly. Tortoises can't usually swim, so keep them away from deep water, but they do benefit from a bath in shallow, lukewarm water a couple of times a week, especially if they are kept indoors and you have central heating. Ideally, tortoises should have access to outdoors, especially in the daytime, except in very cold weather.
Some species benefit from bird sand or grit, as a source of calcium.
Do clean whatever you use regularly, and use filters to keep water clean for aquatic species. Most reptiles need hiding places , so put plants, ceramic drain pipes, tree bark, and other cover in their vivarium for them to hide behind or under. They may suffer stress if they are exposed to view all the time, and this is especially true for new acquisitions. Let them gradually get used to the sounds of their new environment, and they'll be less likely to dart away and hide when you approach. Chameleons, anoles, and some geckos like to climb, so need height in their vivarium, and tree branches to climb on.