Notes in Fallout 76 can be found scattered across Appalachia, and can contain scraps of lore, the stories of those who once lived in West Virginia, and various other information.
Transcript for Waste Baskets
I'm sick of waiting. I'm writing down my complaint, instead. Hope these robots can read.
My complaint is that there's no waste baskets in this building. None.
Where to find Waste Baskets