Iris Ohyama, Boxes, Plastic shoe storage organizer with ergonomic handles, 14L, Set of 6, Stackable, BPA Free, Bedroom, Office, Living room, EUNS, Clear : Amazon.co.uk: Home & Kitchen
LEGO brick wall made out of Muji storage boxes. They have dividers for extra segregation, plus Muji has well fitting additional small boxes. : r/LegoStorage