Example ideal of $\mathfrak{sl}(2,\mathbb{C})$

Question

I need an example about ideal from lie algebra $\mathfrak{sl}(2,\mathbb{C})$ except trivial ideal and $\mathfrak{sl}(2,\mathbb{C})$ itself, can someone help me?

I try to make ideal except trivial ideal and $\mathfrak{sl}(2,\mathbb{C})$ itself, but I got stuck.