Everyone in retail knows that people tend to buy more when items are stacked in apparent profusion…no-one is sure why.
But stacking stuff up in-store is a waste of time and it increases both breakages and shoplifting.

So, today’s invention is to use a bank of hinged mirrors to make a compact, multi-image display of each stock item for sale in a store. Want to change the entire display? -just replace that one cup or that one packet of cornflakes.
Shoppers don’t have to carry items around the store, which may make them inclined to buy more (a la IKEA). All they have to do is make a note of the things they want and request these to appear at the checkout.
An electronic request mechanism could be provided, by which customers click a button at the display and have a warehouse picking process automatically start up, so that the waiting time at the checkout is minimised.