I am a full time housewife and I stay home for most of the time. Usually, I will give her biscuit OR fruit as teatime snacks with drink (lemon tea, Ribena, or tea bags) when my son takes the snacks in the afternoon. Sometimes when I forget she could not take it herself.
However, when there is a free gift from the newspaper, eg. the Sun, I ask her to line up to get a free biscuit and I will give her the biscuit. She will keep it and eat by herself sometime she feels hungry.