Take a look at picture book author Rick Walton's great list of story starting ideas....Rick's latest book, of many, was Mr. President Goes to School, out last summer, with Baby's First Year on the way.
Or, start with:
Something about food from a kid's perspective: a polite, polite dinner at a formal restaurant; a surprise breakfast for mom; a juicy peach; sprinkles on a cupcake, corn on the cob, soggy cereal, a perfectly roasted marshmallow.
Different rooms in a house: bathroom, bedroom, attic, basement, mudroom, formal living room, sun room.
Outside parts of a house: shed, garage, backyard, vegetable garden, laundry line, front porch, apartment balcony,doghouse, fish pond, deck, hammock.
A shape. A color.
A phrase. "Who me?" "I'm trying, I'm trying." "That was the last time I . . . " "The rain washed it away." "I'd rather have a ___ than a ___" "We're going to see my ___" "When the snow stopped ___" "The ball was completely flat."
Start a story with a sound: