Good grips

I haven't figured this one out. A series of randomly placed wooden knobs of various sizes attached to a  restroom stall in Schipoul Airport, Amsterdam. They look a lot like drawer pulls. Really hard to get a good shot in the narrow confines of the stall. And I didn't even think about checking out other stalls for a similar arrangement. It is likely that they are just a design statement on the lowly utility hook. Just unexpected.