These were everywhere back in the day, but I never used one. I saw them mostly in stores by the checkout lines, probably so parents could send their kids off to the booth while they waited in line to pay for their merchandise to get them out of their hair. Often I'd ask for a quarter to watch a cartoon, but my folks always said "no". Out of principle "there's no way in the world they'd pay a quarter for cartoons I could watch at home for free". I can see their point now, but back then it just seemed like they were so damn unreasonable.