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.
1-3
Toddlers, stacking, sorting, pulling along
Walking is new, and repetition is the whole point.
Toys that stack, post, sort or get dragged along behind will be done a hundred times over, and then a hundred more. Chunky pieces survive this age. Fiddly ones do not.