Hammurabi's Code (All 282 of them..)
162 - If a man marry a woman, and she bear sons to him; if then this woman die, then shall her father have no claim on her dowry; this belongs to her sons.
If something like this was enacted in today's society we wouldn't have to worry about spouses killing one another for their own personal gain.
14 - If any one steal the minor son of another, he shall be put to death.
Prevents Child kidnapping
56 - If a man let in the water, and the water overflow the plantation of his neighbor, he shall pay ten gur of corn for every ten gan of land.
This law would help pay for intentional property damage.
128 - If a man take a woman to wife, but have no intercourse with her, this woman is no wife to him
I just think this would be a funny law.. So I picked it..
196 - If a man put out the eye of another man, his eye shall be put out. [ An eye for an eye ]
Eye for an eye is the bet way to go about things, none of this "it leaves the world blind" shenanigans