Coal is traditionally placed in the stockings of naughty children as a symbol of getting nothing for misbehaving.
They get their but wacked by the boogeyman ! (it's true!)
Traditionally, Santa gives naughty people lumps of coal.
Charcoal. your parents usally put things in there
It all depends what he leaves if you been good or naughty.
They got some snow and some coal and no presents
to hide unseemly bristle
The common fruit found in stockings in Canadian prairies is typically an orange. Traditionally, oranges were placed in stockings as a treat during the holiday season.
Traditionally, stockings were made of cotton, linen or wool. The finest were made of silk, far beyond the means of most. A picture of some silk stockings made for Queen Victoria is at the link below, along with a history of stockings.
Santa traditionally keeps lists of the naughty and the nice children. Those on the naughty list receive coal. Those on the nice list receive presents.
It is possible that the question is asking about what people in the Canadian prairies traditionally put in their Christmas stockings. Some common items include candy, small toys, fruit, and nuts.
Traditionally, at Christmas, stocking are hung from the fireplace's mantelpiece.