Mnemonics for 汉字: examples and resources
I can only remember other things about the structure of characters.

When someone get name of others, if the surname is Zhang, he may ask 弓长张 or 立早章?

And the most confusing riddle, I think, 

一个不出头，两个不出头，三个不出头，不是不出头，就是不出头. (打一字)

When I first know the riddle, I was like, wtf, it doesn't even make sense, what does 不出头 mean? And the most confusing part 不是不出头, 就是不出头.

And when I had got the answer, it became my favorite 汉字 riddle instantly.