A young girl needed a science fair project (6th grade, she was). I questioned her about her interests, to make it brief she came back in a couple of months later and radiantly stated that I'd helped her make it to STATE!!! science fair. No, she didn't win State. But I'll be that she was one of the very, very few who have ever mummified a squirrel.
Also helped another young lady in her pursuit of a PhD in biochemistry -- encouragement and so on. Nothing much, except that she had had MS since she was very young and was confined to a powered chair....