Very good sorting but had to figur out what goes where because there were not instructions and a very pixelated picture to go by. Very small and petty things: * A lot of plastic for making this which makes it "expensive" or almost as expensive as store an bought organizer. * The location cards (6 piles) are split in two sections. * There's a gap in the box, ca. 10mm, not a perfect fit. Might be a different box than the creators.