When i first started the diet i bought myself a little basket and would take a weeks supply out and put it in the basket, now i just leave mine in the box, mine seems to be ok in the original box though.
I have a wee paper bag that I keep my weeks worth in and store the rest in the box that they got delivered in. I did however arrange them all as I have a touch of the old OCD! Mines seem to be fine. You can get clear food boxes cheap from like Asda and Tesco if you fancy that?
I have a small unit with plastic raffia look draws ( from argos they are bathroom furniture ) and I have them in there in the utility room , before i had these i stored in the box with no problems