Beethoven has two adorable flute sonata. One is Anh.4, composed around his early 20. It was found amongst Beethoven’s papers after his death, remaining unpublished until 1906 (source wikipedia). Its Largo movement is absolutely gorgeous:
The other is Op. 41, composed when he was around 30. Vivid, bouncy and cute:
I was fascinated by these two pieces when first heard them in high school. While I later inevitably gradually become more found of other sophisticated works, they stayed as my loves — they’re so adorable. Happy Sunday!