MattKing Ah so—! They come in long size too, yes? In that case, I'm going back down to the supermarket to buy a few more tubes. I got a strange look from the checkout chick. This time I'll show her the containers, minus-labels, with their new look!

I've probably got the mid-size e.g. that holds one roll with space to pack a few of the M&Ms at the top for the lovely girl who does the E6 processing (a creative way to a discount!).
Whatever, this is a cool idea. Perhaps we should now patent it before Apple does?

Erm...I do have one last query. What am I supposed to do with this growing mountain of M&Ms??