It is not appropriate to buy school supplies for your younger brothers and sisters as New Year gifts. You are not their parents, and their parents will naturally buy those things. My suggestion is to buy something their parents will not buy, or something they really want. Such gifts will definitely be liked by them.
Of course, when buying New Year gifts for your younger brothers and sisters, you should first look at their hobbies. Buy what they like and want.
Finally, I will recommend some gifts to you. I believe your younger brothers and sisters will like them!
1. Color-changing sun jar: It will automatically collect sunlight during the day and release the collected sunlight at night. It is magical and fun. Generally, children like novel gifts, and it is also very practical because it can be used as a night light.
2. DIY chocolate: Most children like to eat chocolate, because the deliciousness of chocolate is irresistible to children. DIY chocolate not only retains the delicious taste of chocolate, but also incorporates the elements of personality into it, such as writing some blessings to your younger brothers and sisters on the chocolate. Such a gift will not only make your younger brothers and sisters like it, but also express your thoughts to your younger brother.