Choice of crisps. When I was a kid you had a load of brands in the shop like KP, smiths, seabrook, walkers, phi leas fogg, and then a load of cheap but sometimes nice ones. Now everybody has been bought out by walkers and there is no variety in flavours. You'd get 5 different cheese and onion crisps, all of which were quite different tasting and had varying amounts of flavour, but now cheese and onion is just cheese and onion, a uniform flavour because it's the same stuff from the same manufacturer but shaped differently and packaged differently to create the illusion of choice.