It is still recommended for younger children to learn some fixed-pitch instruments that do not require any tuning. Contributes to the development of listening skills. Such as piano, electronic keyboard, harmonica, etc.
If you have older children, you can consider wind instruments. Wind instruments come in several colors and have different timbres, and they can also exercise your lung capacity.
Since string instruments need to be tuned and have higher requirements on children’s listening ability, it is more difficult than the first two, so I personally do not recommend it, but it is quite good if you can persevere.