That's amazing! Such a good idea. I'm now sad we don't have a morrisons around here.
We were discussing the other day how even though our friends and us all shop in the same store, so many of them are complaining that they can't get "anything". When what they actually meant when we offered to pick things up (as we weren't having problems finding things), is "they don't have the exact things I want".
These boxes are a fab idea for people who can be flexible in their eating habits. I'd love to make a bolognese, but with no tinned tomatoes or tomato puree, we're just gonna have to suffer through without a bolognese ;)
If enough people took up this idea, it would leave stuff on the shelves for those that need specific products for whatever reason.
(Not that we need to be in this situation anyway, if the fools among us would just stop stripping the shops of everything!!)