Ok so as per Giorginetto's request, these are the boxes I am using, until this moment that is, to store playmobil
1st attachment is a 34,5 litre box with dimensions 42x35,5x33 cm.... these cost around 8 euros in praktiker and I use them to store big parts and items from various sets or whole sets together, like the dragon temple, and any steck part appart form steck walls and steck connectors
2nd attachment I use curver plastic boxes 45 litres dimentions 394x598x273 (i am not sure what type of mesurement this is) for my steck walls and steck connectors, as well as system x parts their cost is around 20 euros
3rd attachment i am not sure as to the mesures and storage capability of these but they cost 4,9 and they are really great for storing either parts of a single theme, for example western rifle holders, chairs, tables, canoos, or multiples of the same item like horses for example...