Toffee Yo Yos were magnificent. I loved the mint ones too. I also loved the way the foil wrapper fitted snugly round the biscuit. Do you remember those McVities fully covered choc biscuits in milk or plain chocolate? They were wrapped the same way.
It reminds me of school tuck shops. Also, Potato Puffs - we always sold Potato Puffs in our school tuck shop.