I have recently sorted all the lego my children possess - and that is a significant amount - into tubs of different colours in plastic drawer units as well as separate tubs for wheels, windows/doors and figures, and also a tub for bits that don't seem to fit into any box such as mini treasure chests, things that I am informed are antennae, elastic band things, boats and so on. This has been a hit with the children and the play value they get out of the lego and the increasingly sophisticated models they make has been brilliant. However I still have the problem of what to do with the sets that are in favour, at the moment number 2 son has several pirates of the caribbean models in a box, also a box with spongebob models in various states of construction, a semi derelict city police station and so on. I do keep all the instructions safely together, and in any case you can get them on the lego website. So would be interested to know how other parents/children approach lego storage, up until recently we had ours in a couple of big crates, my husband suggested sorting it by shape, crazy idea!