I have memories of my mother sending us to our rooms to write our thank you notes. It was hard because I was (usually) thankful, it's just hard not to sound like you're filling in a terribly boring mad lib. I think they even make partially filled out thank you notes for kids, because sending someone a clearly formulaic letter is...special? But, I think the fact that this letter, from a student to a weather person who showed talked to his class, is proof that jazzing up your thank you letter is worth the effort. Kudos, kid, kudos.
h/t to ChaliceChick for the link