I've got a friend who has a sweet shop I get the plastic boxes that penny sweets come in they go through about 5 a week, you need to wash the sugar out of them, and they break down quite quickly if they are in direct sunlight, but they stack, 5 or more high and are fine for things that are too big, or too many for the smaller draw units, however, I am one of the most disorganised people you will ever meet, and so as well as tools and fittings stuffed into my shed, I also have a stack of empty boxes waiting for me to get round to sorting and filling. as my dad used to always tell me, "do as I say, not as I do"
Cheers
Mike