Several varieties are described as 'ornamental'. They are edible but also colourful and prolific and suitable for growing as house plants.
Please remember that the extreme heat in our very hot peppers is contained in the oil in the seeds. Deseed them unless you wish to explode. Once you have handled them, wash your hands before touching your eyes or tender skin to prevent burning. Remember also that the heat gets more intense towards the shoulder. Do not be fooled by apparent mildness at the blossom end.