think if you treat children well, they will stick to you. Your nephew loves to stick to you, which proves that you must be very good to him.
When a child reaches the age of ten, he is also a little adult, and he should also be in primary school. You can buy him some school supplies, such as watercolor pens. If he likes to draw, you can give him watercolor pens, if he likes to dance, you can give him dancing shoes, if he likes sports, you can give him a set of sportswear.
Or if you are more well-off now, you can give him a computer so that he can get in touch with high-tech things earlier. This is also a good thing for him, but be careful not to let him indulge in the Internet.
Or, you can also make something for him by yourself, or you two can do it together. There are many ship models in the bookstore now, which need to be assembled and connected by yourself, and then a large ship can be made. I think this is very good for the child's perseverance and patience.