Parents shop by the stage their child is at, not by the kind of toy. Pick a stage and you will only see what fits it.
3-6
Preschool, pretend play, building, drawing
This is where a toy becomes a shop, a hospital or a bus.
Open ended things get played with longest here, because the child supplies the story. Alongside that come first real puzzles and anything that leaves a mark on paper.
What to look for at this stage
Open ended, so it can be something different tomorrow