scanners

conveyor belts on the checkout counters

self check-out

I agree with self check out

Cute clerks

one way aisles

produce misters

aluminum cans

Generic canned and packaged foods.

Self serve meat counter (packaged meats)

Rusty

upc codes on foodstuffs

ingredients label/nutritional info

It's getting tough to come up with a unique answer! Prepared foods? By that I mean things like the sushi bar, or the salad bar, or the rotisserie chicken, etc.

Credit Card processing machines.

Institutional sized products (think those massive cans of soup, tomatoes, veggies).

computers

Coin sorters