Of all the characters, I think that Granny Mavis is my favorite. Her sundae-inspired sweaters, complete with cherries atop the hats, are beyond awesome, and her peaches and pasta and cornflakes and chicken are the sort of quirky, passive-aggressive subterfuge that should get one excused from all further cooking duties! Give me a souped up golf cart to drive back and forth from the Leafy Green Old Folks Home, and I'd be glad to party with The Fossils as well!
Tom would be a good companion to Peirce's Big Nate; they are both well meaning but misguided boys with a boundless enthusiasm for what they hold dear. These notebook novels are the homemade apple pie with whole wheat crust of children's literature; books that are sweet and satisfying while still being nutritious enough to be served occasionally, even for breakfast.