tripods are great for filming , saving you time and helping you find that just right of an angle
light can either break or make your content, having good lighting can play a key role in your content
cameras are not really necessary if you already have a iPhone or a phone that has good quality however they do help free up space in your phone storage and provide great quality. Its also nice to have to make you feel like a real vlogger lol
backdrops are really great , they help support a theme you are going for , and just overall great to hide your surroundings and give you a cleaner background