は

This character looks like a capital “H” with a small “a” at the bottom right. It’s spelled “ha”.

ひ

Imagine that this character is a big smile from someone laughing “hehe”. It’s spelled “hi”, but sounds like the “he” in “hehe”.

ふ

This character resembles the shape of Mt. Fuji. It’s spelled “hu” and makes up the first character in “Fuji”.

へ

This character looks like an arrow pointing up toward heaven. It sounds like the “he” in “heaven.

ほ

This character looks pretty similar to ha, but imagine that this one is a capital “H” with a small “o” at the bottom right. It’s spelled “ho”.