We recently picked up Snowflake Bentley at the library off the audio book shelf. It's a great biographical children's book that reads like a story. It was well done on audio, however the illustrations are fantastic so make sure you get your hands on a hard copy as well.
Snowflake Bentley photographed snowflakes so that he could share their beauty with the world.
He also photographed spider webs, dew on the grass, and other natural curiosities, snowflakes however were always his passion.
You can read more about Snowflake Bentley on the official website here.
I found this kit while searching around online, though I haven't purchased or used it myself, it looks like fun.