A nine-year-old boy in Massachusetts with Asperger's syndrome wanted a rare Lego Emerald Night Train set for $100. 

To teach him the value of a dollar his parents told him to save his money, and he did. For TWO YEARS, he saved all his birthday and Christmas money.

When the kid finally had enough money, he went to buy the set and found out that Lego had STOPPED MAKING it. 

He wrote a letter to Lego and the company managed to track one down, and had it delivered to his house two days before his 11th birthday!