We used to get these only at the pictures. The ladies with the trays around their necks would be 'lit up' in the aisles at either side of the screen so you could find them - all part of the experience in the 50's and 60's.
Why Don't You - Cardiff - BBC1 - 1985 Why Don't You Just Switch Off Your Television Set and Go and Do Something Less Boring Instead? (But you've got to watch the tv to get the ideas). And OMG I remember that stranger advert.