Here are some lightweight types of fitness equipment that can help correct a hunchback:
Elastic bands: elastic bands are a very portable piece of fitness equipment that can be used for a variety of exercises. By using elastic bands, you can strengthen the muscles in your back and shoulders, thus improving hunchbacks.
Dumbbells: Dumbbells are a great piece of exercise equipment for training at home, with a choice of weights. By using dumbbells for back and shoulder training, you can strengthen the muscles in these areas, thus correcting the hunchback.
Push-up stand: Push-ups are a very effective exercise for training the upper body and core muscles. Using a push-up brace will make your body more stable, making it easier to perform proper push-ups, which can help improve hunchbacks.
Yoga mat: A yoga mat is a great piece of equipment for yoga practice, helping you maintain proper posture while also strengthening your back and shoulder muscles. In your yoga practice, you can try some exercises for your back, such as reverse stretches and yoga boat pose.
Balance Ball: A balance ball is a piece of exercise equipment that can help you strengthen your core muscles. By training on a balance ball, you can work the muscles in your back and shoulders to improve your hunchback.
Please note that while these lightweight types of fitness equipment can help you train, if you have a serious hunchback problem, it's best to consult with your doctor or a professional fitness trainer first to ensure that your training is safe and effective.