There are a lot of heating and lighting options. The key is to have the right system for your particular reptile or amphibian.
Lighting is critical because it regulates the sleep cycle as well as provides health benefits. Heat is also important because it maintains body temperature and aids digestion—reptiles and amphibians are ectotherms, which means they obtain heat from outside sources.
The best advice is to research heating and lighting requirements, as each species differs in temperature, duration, etc.